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de Carvalho GG, Vieira BR, Carvalho JDS, de Sousa FB, Cerri PS, de Oliveira KT, Chorilli M, Zandim-Barcelos DL, Spolidorio LC, Spolidorio DMP. Multiple PDT sessions with chlorin-e6 and LL-37 loaded-nanoemulsion provide limited benefits to periodontitis in rats. Photodiagnosis Photodyn Ther 2024:104329. [PMID: 39241923 DOI: 10.1016/j.pdpdt.2024.104329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 09/01/2024] [Accepted: 09/03/2024] [Indexed: 09/09/2024]
Abstract
BACKGROUND The combination of photodynamic therapy (PDT) and LL-37 has never been tested in an animal study and our research team background suggests this strategy might be a promising alternative to intensify periodontitis resolution. This study aimed to assess the effects of multiple sessions of PDT with chlorin-e6 conjugated to the antimicrobial peptide LL-37 loaded nanoemulsion, as adjunctive therapy in experimental periodontitis in rats. METHODS Experimental periodontitis was induced in 81 rats. After disease establishment, animals were assigned to three groups: SRP (scaling and root planning); SRP + 1PDT, SRP followed by a single PDT session; SRP + 4PDT (n=27), SRP followed by four PDT sessions at 0, 24, 48 and 72h after SRP. Animals were subjected to euthanasia at 7, 14 and 28 days, and samples were submitted to osteoclast quantification, immunological and microtomography analysis. RESULTS All treatments resulted in significant periodontal improvements and there was no significant difference between the groups in both local inflammatory response and healing process. Minimal adjunctive effects could be found for the combined therapy in terms of cytokine levels (IL-1β and IL-10), with no statistical significance. However, the number of TRAP-positive osteoclasts per mm of alveolar bone linear surface for the group treated with PDT sessions was significantly lower than those treated with SRP only. CONCLUSIONS Multiple PDT sessions with chlorin-e6 and LL-37 nanoemulsion as an adjunct to scaling and root planning reduced the presence of osteoclast in the local site but did not contribute towards bone regeneration and IL-1β and IL-10 levels.
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Affiliation(s)
- Gabriel Garcia de Carvalho
- Department of Physiology and Pathology, São Paulo State University (Unesp), School of Dentistry at Araraquara, Araraquara, São Paulo, Brazil
| | | | - Jhonatan de Souza Carvalho
- Department of Physiology and Pathology, São Paulo State University (Unesp), School of Dentistry at Araraquara, Araraquara, São Paulo, Brazil
| | | | - Paulo Sergio Cerri
- Department of Morphology and Periatric Dentistry, School of Dentistry, São Paulo State University (Unesp) School of Dentistry at Araraquara, Araraquara, São Paulo, Brazil
| | | | - Marlus Chorilli
- Department of Drugs and Medicines, International School of Pharmaceuticals Sciences, São Paulo State University, Araraquara, São Paulo, Brazil
| | - Daniela Leal Zandim-Barcelos
- Department of Oral Diagnosis and Surgery, São Paulo State University (Unesp), School of Dentistry at Araraquara, Araraquara, São Paulo, Brazil
| | - Luis Carlos Spolidorio
- Department of Physiology and Pathology, São Paulo State University (Unesp), School of Dentistry at Araraquara, Araraquara, São Paulo, Brazil
| | - Denise Madalena Palomari Spolidorio
- Department of Physiology and Pathology, São Paulo State University (Unesp), School of Dentistry at Araraquara, Araraquara, São Paulo, Brazil
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Yakar N, Unlu O, Cen L, Hasturk H, Chen T, Shi W, He X, Kantarci A. Targeted elimination of Fusobacterium nucleatum alleviates periodontitis. J Oral Microbiol 2024; 16:2388900. [PMID: 39139835 PMCID: PMC11321114 DOI: 10.1080/20002297.2024.2388900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 07/17/2024] [Accepted: 07/29/2024] [Indexed: 08/15/2024] Open
Abstract
Background Fusobacterium nucleatum, a pathobiont in periodontal disease, contributes to alveolar bone destruction. We assessed the efficacy of a new targeted antimicrobial, FP-100, in eradicating F. nucleatum from the oral microbial community in vitro and in vivo and evaluated its effectiveness in reducing bone loss in a mouse periodontitis model. Methods A multispecies bacterial community was cultured and treated with two concentrations of FP-100 over two days. Microbial profiles were examined at 24-h intervals using 16S rRNA sequencing. A ligature-induced periodontitis mouse model was employed to test FP-100 in vivo. Results FP-100 significantly reduced Fusobacterium spp. within the in vitro community (p < 0.05) without altering microbial diversity at a 2 μM concentration. In mice, cultivable F. nucleatum was undetectable in FP-100-treated ligatures but persistent in controls. Beta diversity plots showed distinct microbial structures between treated and control mice. Alveolar bone loss was significantly reduced in the FP-100 group (p = 0.018), with concurrent decreases in gingival IL-1β and TNF-α expression (p = 0.052 and 0.018, respectively). Conclusion FP-100 effectively eliminates F. nucleatum from oral microbiota and significantly reduces bone loss in a mouse periodontitis model, demonstrating its potential as a targeted therapeutic agent for periodontal disease.
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Affiliation(s)
- Nil Yakar
- Immunology and Infectious Diseases, The ADA Forsyth Institute, Cambridge, MA, USA
- Faculty of Science, Basic and Industrial Microbiology Section, Ege University, Izmir, Turkey
| | - Ozge Unlu
- Immunology and Infectious Diseases, The ADA Forsyth Institute, Cambridge, MA, USA
- Faculty of Medicine, Department of Medical Microbiology, Istanbul Atlas University, Istanbul, Turkey
| | - Lujia Cen
- Department of Microbiology, The ADA Forsyth Institute, Cambridge, MA, USA
| | - Hatice Hasturk
- Immunology and Infectious Diseases, The ADA Forsyth Institute, Cambridge, MA, USA
| | - Tsute Chen
- Department of Microbiology, The ADA Forsyth Institute, Cambridge, MA, USA
| | - Wenyuan Shi
- Department of Microbiology, The ADA Forsyth Institute, Cambridge, MA, USA
| | - Xuesong He
- Department of Microbiology, The ADA Forsyth Institute, Cambridge, MA, USA
| | - Alpdogan Kantarci
- Immunology and Infectious Diseases, The ADA Forsyth Institute, Cambridge, MA, USA
- Department of Oral Microbiology and Infection, Harvard School of Dental Medicine, Boston, MA, USA
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Taccardi D, Chiesa A, Maiorani C, Pardo A, Lombardo G, Scribante A, Sabatini S, Butera A. Periodontitis and Depressive Disorders: The Effects of Antidepressant Drugs on the Periodontium in Clinical and Preclinical Models: A Narrative Review. J Clin Med 2024; 13:4524. [PMID: 39124790 PMCID: PMC11312867 DOI: 10.3390/jcm13154524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2024] [Revised: 07/26/2024] [Accepted: 08/01/2024] [Indexed: 08/12/2024] Open
Abstract
Background/Objectives: Several psychological conditions, including stress and depression, can adversely affect oral health; in fact, antidepressants, commonly used to treat depressive disorders, may have conflicting effects on the periodontal status of individuals. The aim of this review was to determine the effects of antidepressants on the periodontium. Methods: A literature search was conducted using electronic databases, Pubmed/MEDLINE, Cochrane Library, focusing on the use of antidepressants and their effects on periodontal health in animals or humans. Results: Seventeen articles have been included with the use of amitriptyline (two studies), desipramine (one study), imipramine (two studies), desvenlafaxine (one study), fluoxetine (six studies), venlafaxine (three studies) and tianeptine (two studies). One study evaluated several categories of antidepressants, such as selective serotonin reuptake inhibitors (SSRI), serotonin-norepinephrine reuptake inhibitors (SNRI), tricyclic, atypical and monoamine oxidase inhibitors (MAO). Most trials showed improvements in periodontal health, especially with fluoxetine, but also with imipramine, desipramine, desvenlafaxine and tianeptine; on the contrary, worsening of clinical periodontal indices and increased loss of alveolar bone were reported with venlafaxine. Conclusions: This review suggests that in the presence of comorbidity between periodontitis and depression, pharmacological treatment with SNRIs, SSRIs and mixed antidepressants is associated with improvement in periodontal parameters, except for venlafaxine. Healthcare professionals (especially oral and mental health professionals) should investigate proper adherence to medication therapy in patients with a history of periodontitis and depression. Further clinical trials are needed to confirm these results.
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Affiliation(s)
- Damiano Taccardi
- Unit of Dental Hygiene, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy; (D.T.); (A.C.); (A.S.); (A.B.)
| | - Alessandro Chiesa
- Unit of Dental Hygiene, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy; (D.T.); (A.C.); (A.S.); (A.B.)
| | - Carolina Maiorani
- Unit of Dental Hygiene, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy; (D.T.); (A.C.); (A.S.); (A.B.)
| | - Alessia Pardo
- Section of Oral and Maxillofacial Surgery, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, 37124 Verona, Italy;
| | - Giorgio Lombardo
- Section of Oral and Maxillofacial Surgery, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, 37124 Verona, Italy;
| | - Andrea Scribante
- Unit of Dental Hygiene, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy; (D.T.); (A.C.); (A.S.); (A.B.)
- Unit of Orthodontics and Pediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy
| | - Silvia Sabatini
- Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, 41124 Modena, Italy;
| | - Andrea Butera
- Unit of Dental Hygiene, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy; (D.T.); (A.C.); (A.S.); (A.B.)
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Bertolini M, Clark D. Periodontal disease as a model to study chronic inflammation in aging. GeroScience 2024; 46:3695-3709. [PMID: 37285008 PMCID: PMC11226587 DOI: 10.1007/s11357-023-00835-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 05/20/2023] [Indexed: 06/08/2023] Open
Abstract
Periodontal disease is a chronic inflammatory condition that results in the destruction of the teeth supporting tissues, eventually leading to the loss of teeth and reduced quality of life. In severe cases, periodontal disease can limit proper nutritional intake, cause acute pain and infection, and cause a withdrawal from social situations due to esthetic and phonetic concerns. Similar to other chronic inflammatory conditions, periodontal disease increases in prevalence with age. Research into what drives periodontal disease pathogenesis in older adults is contributing to our general understanding of age-related chronic inflammation. This review will present periodontal disease as an age-related chronic inflammatory disease and as an effective geroscience model to study mechanisms of age-related inflammatory dysregulation. The current understanding of the cellular and molecular mechanisms that drive inflammatory dysregulation as a function of age will be discussed with a focus on the major pathogenic immune cells in periodontal disease, which include neutrophils, macrophages, and T cells. Research in the aging biology field has shown that the age-related changes in these immune cells result in the cells becoming less effective in the clearance of microbial pathogens, expansion of pathogenic subpopulations, or an increase in pro-inflammatory cytokine secretions. Such changes can be pathogenic and contribute to inflammatory dysregulation that is associated with a myriad of age-related disease including periodontal disease. An improved understanding is needed to develop better interventions that target the molecules or pathways that are perturbed with age in order to improve treatment of chronic inflammatory conditions, including periodontal disease, in older adult populations.
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Affiliation(s)
- Martinna Bertolini
- Department of Periodontics and Preventive Dentistry, University of Pittsburgh School of Dental Medicine, Pittsburgh, PA, USA
| | - Daniel Clark
- Department of Periodontics and Preventive Dentistry, University of Pittsburgh School of Dental Medicine, Pittsburgh, PA, USA.
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Chatzaki N, Stavropoulos A, Denes B, Cancela J, Kiliaridis S, Giannopoulou C. Induced Periodontitis in Rats With Three Ligature Types: An Exploratory Study. Clin Exp Dent Res 2024; 10:e946. [PMID: 39104140 DOI: 10.1002/cre2.946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 07/23/2024] [Accepted: 07/26/2024] [Indexed: 08/07/2024] Open
Abstract
BACKGROUND The placement of ligatures in the cervical area of rat molars is considered as a predictable model to induce periodontitis. OBJECTIVES The present explorative study aimed to compare the efficacy of metal wires (MWs), without or with sandblasting, versus silk ligatures (SLs) in inducing periodontal bone loss in rats. MATERIALS AND METHODS Twenty-four Wistar rats were randomly divided into three groups of eight rats that received three different types of ligatures (MW, sandblasted wire [SMW], and SL) around their first right mandibular molar, while the contralateral tooth was left without the ligature and served as a control. Bone loss was assessed by measuring the distance from the cementoenamel junction (CEJ) to the bone crest at the distal aspect of the first molar on central mesiodistal sections generated from micro-CT scans taken 24 and 35 days after ligature placement. RESULTS In the SL group, only in two rats the ligatures were retained until the end of the 24-day period; in all other animals, the ligatures were lost at some time point. In the SMW, the ligatures were retained only for the 24-day period. In the MW group, no ligatures were lost. Irrespective of the group or experimental period, the difference in the crestal bone level between ligated and control teeth was in most cases z < 0.20 mm, that is, in 19 out of 25 pairs of teeth. In a few cases, the bone crest was more apically located at the control teeth compared to the ligated ones (four cases each, during both 24- and 35-day experimental periods). CONCLUSIONS Bone loss was minimal during the experimental period, with no significant differences between the test and control teeth, or among the three types of ligatures. MWs, not even roughened, do not seem to be a better alternative to SLs for inducing bone loss in the experimental periodontitis model in the rat. This assumption, however, has to be confirmed in a larger, well-powered study.
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Affiliation(s)
- Natalia Chatzaki
- Division of Regenerative Dental Medicine and Periodontology, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Andreas Stavropoulos
- Periodontology, Faculty of Odontology, Malmo University, Malmo, Sweden
- Department of Periodontology, Blekinge Hospital, Karlskrona, Sweden
- Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Balazs Denes
- Department of Orthodontics and Dentofacial Orthopedics, Dental School, Medical Faculty, University of Geneva, Geneva, Switzerland
| | - José Cancela
- Division of Regenerative Dental Medicine and Periodontology, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Stavros Kiliaridis
- Department of Orthodontics and Dentofacial Orthopedics, Dental School, Medical Faculty, University of Geneva, Geneva, Switzerland
- Department of Orthodontics and Dentofacial Orthopedics, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Catherine Giannopoulou
- Division of Regenerative Dental Medicine and Periodontology, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
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Wang J, Lin J, Song X, Wang M, Chen Y, Luo N, Wu X. Differential effects of clopidogrel and/or aspirin on the healing of tooth extraction wound bone tissue. Front Physiol 2024; 15:1387633. [PMID: 39086935 PMCID: PMC11289322 DOI: 10.3389/fphys.2024.1387633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 06/24/2024] [Indexed: 08/02/2024] Open
Abstract
Introduction A multitude of variables influence the healing of tooth extraction wounds, and delayed or non-healing extraction wounds might complicate later prosthodontic therapy. In this research, we analyzed the effects of systemic clopidogrel and aspirin alone or in combination on the healing of tooth extraction wounds in mice in order to provide experimental evidence for the healing of extraction wounds in patients who are clinically treated with the two medicines. Methods 7-week-old ICR mice were randomly divided into four groups: control group (CON), clopidogrel group (CLOP), aspirin group (ASP), and clopidogrel combined with aspirin group (CLOP + ASP); left upper first molar was extracted, after which mice in 1 week of adaptive feeding, CLOP/ASP/CLOP + ASP groups were respectively administered with clopidogrel (10 mg/kg/d), aspirin (15 mg/kg/d), clopidogrel (10 mg/kg/d)+aspirin (15 mg/kg/d), and the control group was given an equal amount of 0.9% saline by gavage. Mice in each group were euthanized at 14 and 28 days postoperatively, and the maxilla was extracted. The tissues in the extraction sockets were examined using MicroCT and sectioned for HE staining, Masson staining, and TRAP staining, and immunohistochemistry staining (for TRAP, RANKL and osteoprotegerin). Results MicroCT analysis showed that at day 14, BS/BV was significantly lower in CLOP and CLOP + ASP groups compared to control and ASP groups, while BV/TV, Tb.Th was significantly higher. At day 28, BV/TV was significantly higher in the CLOP + ASP group compared to the CLOP group, with p < 0.05 for all results. HE staining and Masson trichrome staining findings revealed that at day 28, the mesenchyme in the bone was further decreased compared to that at day 14, accompanied with tightly arranged and interconnected bone trabeculae. In the quantitative analysis of Masson, the fraction of newly formed collagen was significantly higher in the CLOP group in comparison with that in the CON group (p < 0.05). At day 14, the ASP group had substantially more TRAP-positive cells than the CLOP and CLOP + ASP groups (p < 0.05). In immunohistochemical staining, RANKL expression was found to be significantly higher in the ASP group than those in the other three groups at day 28 (p < 0.05); OPG expression was significantly higher in the CLOP group and the CLOP + ASP group compared with that at day 14, and was higher than that in the ASP group at day 14 and day 28. OPG/RANKL was significantly higher in the CLOP and the CLOP + ASP groups than in the ASP group (p < 0.05). Conclusion Clopidogrel alone promotes osteogenesis in the extraction wound, whereas aspirin alone inhibits alveolar bone healing. When the two drugs were combined, the healing effect of the extraction wound was more similar to that of the clopidogrel alone group. These results indicated that clopidogrel could promote the healing of the tooth extraction wound, and neutralize the adverse effect of ASP on osteogenesis when the two drugs were used in combination.
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Affiliation(s)
- Jiaping Wang
- Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Juan Lin
- Nanjing First Hospital, Department of Stomatology, Nanjing, China
| | - Xin Song
- Nanjing First Hospital, Department of Stomatology, Nanjing, China
| | - Mengting Wang
- Nanjing First Hospital, Department of Stomatology, Nanjing, China
| | - Yan Chen
- Nanjing First Hospital, Department of Stomatology, Nanjing, China
| | - Ning Luo
- Nanjing First Hospital, Department of Stomatology, Nanjing, China
| | - Xin Wu
- Nanjing First Hospital, Department of Stomatology, Nanjing, China
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Wei X, Qian S, Yang Y, Mo J. Microbiome-based therapies for periodontitis and peri-implantitis. Oral Dis 2024; 30:2838-2857. [PMID: 37890080 DOI: 10.1111/odi.14782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 09/16/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023]
Abstract
OBJECTIVES Periodontitis and peri-implantitis are oral infectious-inflammatory diseases associated with oral microbial dysbiosis. Microbiome-based therapies, characterized by manipulation of the microbiota, are emerging as promising therapeutic approaches to resolve the microbial dysbiosis and associated dysregulation of immune system. This review aims at summarizing recent progress on microbiome-based therapies in periodontitis and peri-implantitis, promoting a further understanding of the related therapeutic mechanisms. SUBJECTS AND METHODS Pertinent literatures focused on microbiome-based therapies for periodontitis and peri-implantitis are obtained from PubMed and Web of Science. RESULTS In this article, we review the roles and therapeutic mechanisms of four microbiome-based therapies, including probiotics, postbiotics, predatory bacteria and phages, and microbiota transplantation, in the management of periodontitis and peri-implantitis. Challenges facing this field are also discussed, highlighting the areas that require more attention and investigation. CONCLUSIONS Microbiome-based therapies may serve as effective treatment for periodontitis and peri-implantitis. This review presents a new viewpoint to this field.
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Affiliation(s)
- Xindi Wei
- Department of Oral and Maxillo-facial Implantology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China
| | - Shujiao Qian
- Department of Oral and Maxillo-facial Implantology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China
| | - Yijie Yang
- Department of Oral and Maxillo-facial Implantology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China
| | - Jiaji Mo
- Department of Oral and Maxillo-facial Implantology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China
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Wichienrat W, Surisaeng T, Sa-Ard-Iam N, Chanamuangkon T, Mahanonda R, Wisitrasameewong W. Alveolar Bone Loss in a Ligature-Induced Periodontitis Model in Rat Using Different Ligature Sizes. Eur J Dent 2024; 18:933-941. [PMID: 38442914 PMCID: PMC11290929 DOI: 10.1055/s-0044-1779426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024] Open
Abstract
OBJECTIVES Ligature-induced periodontitis model has been widely used as a preclinical stage for investigating new treatment modalities. However, the effect of different ligature sizes on alveolar bone loss has never been studied. Therefore, we examined alveolar bone loss in this rat model using different sizes of silk ligatures, as well as healing after ligature removal. MATERIALS AND METHODS Left maxillary second molars of Sprague-Dawley rats were ligated with 3-0, 4-0, or 5-0 silk ligatures (n = 4-5/group) for 14 days before harvested maxillae and gingival tissues. For subsequent experiment, animals were ligated for 14 days using the ligature size that induced the most alveolar bone loss before ligature removal and sacrificed at 0, 7 and 14 days (n = 5-6/group). All maxillae and gingival tissues were harvested to evaluate alveolar bone level, tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β) levels. STATISTICAL ANALYSIS Data was analyzed using SPSS Statistics 23.0 software (SPSS Inc., Chicago, Illinois, United States). Data from all experiments were tested for normality using Shapiro-Wilk test. Data between ligatured and nonligatured teeth were compared using Student's t-test or Wilcoxon signed-rank test. Differences among different ligature sizes were analyzed by analysis of variance followed by multiple comparisons with post-hoc test. A p-value less than 0.05 was considered statistically significant. RESULTS The alveolar bone loss of ligated teeth was substantially higher than that of control after 14 days of ligation. While 3-0 and 4-0 resulted in significantly greater bone loss than 5-0 silk, the 3-0 group had the lowest rate of ligature loss. Therefore, alveolar bone healing postligature removal was investigated further using 3-0 silk. The results showed no significant bone level change at 2 weeks after ligature removal. In term of IL-1β and TNF-α levels, there was no statistically significant difference in IL-1β level between groups at any time point, while TNF-α was undetectable. CONCLUSION These data showed that 3-0 silk was the most effective ligature size in promoting alveolar bone loss comparing with 4-0 and 5-0 silk. During the 2-week period following ligature removal, spontaneous bone healing was not observed.
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Affiliation(s)
- Warintorn Wichienrat
- Department of Periodontology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Theeraphat Surisaeng
- Department of Periodontology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Noppadol Sa-Ard-Iam
- Center of Excellence in Periodontal Disease and Dental Implant, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Immunology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Theerapat Chanamuangkon
- Biomaterial Testing Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Rangsini Mahanonda
- Department of Periodontology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Periodontal Disease and Dental Implant, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Immunology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Wichaya Wisitrasameewong
- Department of Periodontology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Periodontal Disease and Dental Implant, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Immunology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
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Ferreira RDO, dos Santos VRN, Matos Sousa JM, Peinado BRR, Souza-Monteiro D, Bittencourt LO, Lima MLDS, Rösing CK, Mezzomo Collares F, Antunes de Araújo A, Lima RR. Physical training minimizes immunological dysfunction, oxidative stress and tissue destruction on experimental periodontitis in rats. PLoS One 2024; 19:e0303374. [PMID: 38843156 PMCID: PMC11156300 DOI: 10.1371/journal.pone.0303374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 04/23/2024] [Indexed: 06/09/2024] Open
Abstract
The objective of this study is to investigate the effects of a moderate intensity physical training protocol, on alveolar bone morphology of rats submitted to ligature-induced periodontitis. Twenty-eight male Wistar rats were divided into four groups, considering the presence/absence of periodontitis and presence/absence of training. The training protocol was performed on a treadmill, 30 min/day, 5 days a week, for 4 weeks. In the experimental periodontal breakdown, with/without training, ligatures were placed on the lower first molars on the 14th day of the experiment, and were followed until the end of the protocol. At the end of the experiment, animals were euthanized and samples of plasma and mandibles were collected for immunoenzymatic evaluation of interleukins (IL)-1β, IL-6, TNF-α and IL-10, evaluation of serum concentrations of C-reactive protein, analysis of lipid peroxidation (LPO) and reduced glutathione, histological and microtomographic analyses were performed. Physical training resulted in a reduced levels of IL-1β, IL-6, TNF-α C-reactive protein and LPO and an increase in the levels of IL-10 in rats with periodontitis (p<0.05); a reduction in the inflammatory infiltrate and decreased fiber degradation was identified in histological analysis. Additionally, it was shown a decrease in vertical bone loss and an increase in the bone volume/trabecular volume ratio was identified in periodontitis+physical training group (p<0.05). Based on the results, the practice of frequent physical exercise, at moderate intensity, can contribute to the reduction of damage related to the disproportionate inflammatory response in periodontitis.
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Affiliation(s)
- Railson de Oliveira Ferreira
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
| | - Vinicius Ruan Neves dos Santos
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
| | - José Mário Matos Sousa
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
| | | | - Deiweson Souza-Monteiro
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
| | - Leonardo Oliveira Bittencourt
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
| | - Maria Laura de Sousa Lima
- Postgraduate program in Oral Science / Department of Biophysics and Pharmacology, Centro de Biociências, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Cassiano Kuchenbecker Rösing
- Faculty of Dentistry, Department of Periodontology, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Fabrício Mezzomo Collares
- Department of Conservative Dentistry, Dental Materials Laboratory, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Aurigena Antunes de Araújo
- Postgraduate program in Oral Science / Department of Biophysics and Pharmacology, Centro de Biociências, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Rafael Rodrigues Lima
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
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10
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Zhao X, Liu W, Wu Z, He X, Tang Y, He Q, Lin C, Chen Y, Luo G, Yu T, Wang X. Hepatocyte growth factor is protective in early stage but bone-destructive in late stage of experimental periodontitis. J Periodontal Res 2024; 59:565-575. [PMID: 38240289 DOI: 10.1111/jre.13237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 12/01/2023] [Accepted: 12/25/2023] [Indexed: 05/24/2024]
Abstract
BACKGROUND AND OBJECTIVE Clinical studies found high levels of hepatocyte growth factor (HGF) expression in patients with periodontitis. Studies suggest that HGF plays an important role in periodontitis, is involved in inflammation, and modulates alveolar bone integrity in periodontitis. This study aims to investigate the effects and mechanisms of HGF in the progression of experimental periodontitis. METHODS We used silk thread ligation to induce periodontitis in HGF-overexpressing transgenic (HGF-Tg) and wild-type C57BL/6J mice. The effects of HGF overexpression on alveolar bone destruction were assessed by microcomputed tomography imaging at baseline and on days 7, 14, 21, and 28. We analyzed the cytokines (IL-6 and TNF-α) and lymphocytes in periodontitis tissues by enzyme-linked immunosorbent assay and flow cytometry. The effects of HGF on alveolar bone destruction were further tested by quantifying the systemic bone metabolism markers CTXI and PINP and by RNA sequencing for the signaling pathways involved in bone destruction. Western blotting and immunohistochemistry were performed to further elucidate the involved signaling pathways. RESULTS We found that experimental periodontitis increased HGF production in periodontitis tissues; however, the effects of HGF overexpression were inconsistent with disease progression. In the early stage of periodontitis, periodontal inflammation and alveolar bone destruction were significantly lower in HGF-Tg mice than in wild-type mice. In the late stage, HGF-Tg mice showed higher inflammatory responses and progressively aggravated bone destruction with continued stimulation of inflammation. We identified the IL-17/RANKL/TRAF6 pathway as a signaling pathway involved in the HGF effects on the progression of periodontitis. CONCLUSION HGF plays divergent effects in the progression of experimental periodontitis and accelerates osteoclastic activity and bone destruction in the late stage of inflammation.
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Affiliation(s)
- Xiaomin Zhao
- School and Hospital of Stomatology, Guangzhou key Laboratory of Basic and Applied Research of oral Regenerative Medine & Optional Institutions, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Weijia Liu
- School and Hospital of Stomatology, Guangzhou key Laboratory of Basic and Applied Research of oral Regenerative Medine & Optional Institutions, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Zhicong Wu
- School and Hospital of Stomatology, Guangzhou key Laboratory of Basic and Applied Research of oral Regenerative Medine & Optional Institutions, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Xiaoxi He
- School and Hospital of Stomatology, Guangzhou key Laboratory of Basic and Applied Research of oral Regenerative Medine & Optional Institutions, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yinghua Tang
- School and Hospital of Stomatology, Guangzhou key Laboratory of Basic and Applied Research of oral Regenerative Medine & Optional Institutions, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Qian He
- School and Hospital of Stomatology, Guangzhou key Laboratory of Basic and Applied Research of oral Regenerative Medine & Optional Institutions, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Chuyin Lin
- School and Hospital of Stomatology, Guangzhou key Laboratory of Basic and Applied Research of oral Regenerative Medine & Optional Institutions, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yannan Chen
- School and Hospital of Stomatology, Guangzhou key Laboratory of Basic and Applied Research of oral Regenerative Medine & Optional Institutions, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Gang Luo
- School and Hospital of Stomatology, Guangzhou key Laboratory of Basic and Applied Research of oral Regenerative Medine & Optional Institutions, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Ting Yu
- School and Hospital of Stomatology, Guangzhou key Laboratory of Basic and Applied Research of oral Regenerative Medine & Optional Institutions, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Xinhong Wang
- School and Hospital of Stomatology, Guangzhou key Laboratory of Basic and Applied Research of oral Regenerative Medine & Optional Institutions, Guangzhou Medical University, Guangzhou, Guangdong, China
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11
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Xie C, Zhang Q, Ye X, Wu W, Cheng X, Ye X, Ruan J, Pan X. Periodontitis-induced neuroinflammation impacts dendritic spine immaturity and cognitive impairment. Oral Dis 2024; 30:2558-2569. [PMID: 37455416 DOI: 10.1111/odi.14674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 06/03/2023] [Accepted: 06/27/2023] [Indexed: 07/18/2023]
Abstract
OBJECTIVE This study investigated the spinal changes in ligature-induced periodontitis and the role of periodontitis in cognitive impairment. METHODS Twenty mice were randomized into the control and chronic periodontitis (CP) groups, with the latter receiving ligature-induced periodontitis. Cognitive performance was assessed by fear conditioning test. Periodontal inflammation and alveolar bone resorption were evaluated by micro-computed tomography and histopathology. The hippocampal microglial activation was evaluated by immunohistochemistry (IHC). The expressions of hippocampal cytokines (TNF-α, iNOS, IL-1β, IL-4, IL-10, and TREM2) were measured by reverse transcription-polymerase chain reaction. The morphology and density of the dendritic spines were determined by Golgi-Cox staining. RESULTS The CP mice reported significant inflammatory cell infiltration and alveolar bone resorption, with marked increases in cytokine levels (TNF-α, iNOS, IL-1β, and TREM2) in the brain. Moreover, the CP mice showed significantly reduced freezing to the conditioned stimulus in the cued and contextual tests, indicating impaired memory. Further analyses revealed, in the hippocampus of the CP mice, enhanced microglial activation, decreased dendritic spine density, and increased proportion of thin dendritic spines. CONCLUSIONS Periodontitis-induced neuroinflammation may impair the cognitive function by activating hippocampal microglia and inducing dendritic spine immaturity.
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Affiliation(s)
- Changfu Xie
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Qiuyang Zhang
- The Third Clinical Medical College, Fujian Medical University, Fuzhou, China
- Fuzhou Second Hospital, Fuzhou, China
| | - Xinyi Ye
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Weiliang Wu
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Xiaojuan Cheng
- Department of Neurology, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, China
- Institute of Clinical Neurology, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
| | - Xiaoan Ye
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Jianyong Ruan
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Xiaodong Pan
- Department of Neurology, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, China
- Institute of Clinical Neurology, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
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12
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Balaban YE, Akbaba S, Bozkurt SB, Buyuksungur A, Akgun EE, Gonen ZB, Salkin H, Tezcaner A, Hakki SS. Local application of gingiva-derived mesenchymal stem cells on experimental periodontitis in rats. J Periodontol 2024; 95:456-468. [PMID: 37787060 DOI: 10.1002/jper.23-0246] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 07/24/2023] [Accepted: 09/04/2023] [Indexed: 10/04/2023]
Abstract
BACKGROUND Stem cell-based approaches in regenerative periodontal therapy have been used in different experimental models. In this study, the effect of local application of gingival mesenchymal stem cells (GMSC) in fibroin/chitosan oligosaccharide lactate hydrogel (F/COS) on periodontal regeneration was evaluated using experimental periodontitis model in rats. METHODS Mesenchymal stem cells were isolated from the gingiva of rats and characterized. Viability tests and confocal imaging of GMSC in hydrogels were performed. Healthy control without periodontitis (Health; H; n=10), control with periodontitis but no application (Periodontitis; P; n=10), only hydrogel application (F/COS; n=10), and GMSC+F/COS (n=10) four groups were formed for in vivo studies. Experimental periodontitis was created with silk sutures around the maxillary second molars. GMSC labeled with green fluorescent protein (GFP) (250,000 cells/50 μL) in F/COS were applied to the defect. Animals were sacrificed at 2nd and 8th weeks and maxillae of the animals were evaluated by micro-computed tomography (micro-CT) and histologically. The presence of GFP-labeled GMSC was confirmed at the end of 8 weeks. RESULTS Micro-CT analysis showed statistically significant new bone formation in the F/COS+GMSC treated group compared with the P group at the end of 8 weeks (p < 0.05). New bone formation was also observed in the F/COS group, but the statistical analysis revealed that this difference was not significant when compared with the P group (p > 0.05). Long junctional epithelium formation was less in the F/COS+GMSC group compared with the P group. Periodontal ligament and connective tissue were well-organized in F/COS+GMSC group. CONCLUSION The results showed that local GMSC application in hydrogel contributed to the formation of new periodontal ligament and alveolar bone in rats with experimental periodontitis. Since gingiva is easly accessible tissue, it is promising for autologous cell-based treatments in clinical applications.
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Affiliation(s)
- Yunus Emre Balaban
- Faculty of Dentistry, Department of Periodontology, Selcuk University, Konya, Turkey
| | - Sema Akbaba
- Department of Biotechnology, Middle East Technical University, Ankara, Turkey
| | - Serife Buket Bozkurt
- Department of Biochemistry, Niğde Ömer Halisdemir University Faculty of Medicine, Niğde, Turkey
| | - Arda Buyuksungur
- Faculty of Dentistry, Basic Medical Sciences, Ankara University, Ankara, Turkey
| | - E Ece Akgun
- Department of Histology and Embryology, Afyon Kocatepe University Faculty of Veterinary Medicine, Afyonkarahisar, Turkey
| | | | - Hasan Salkin
- Department of Medical Services and Techniques, Program of Pathology Laboratory Techniques, Vocational School, Beykent University, Istanbul, Turkey
| | - Aysen Tezcaner
- Department of Engineering Sciences, Middle East Technical University, Ankara, Turkey
| | - Sema S Hakki
- Faculty of Dentistry, Department of Periodontology, Selcuk University, Konya, Turkey
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13
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Tang Y, Su S, Yu R, Liao C, Dong Z, Jia C, Yau V, Wu L, Guo W, Zheng J. Unraveling ferroptosis in osteogenic lineages: implications for dysregulated bone remodeling during periodontitis progression. Cell Death Discov 2024; 10:195. [PMID: 38670955 PMCID: PMC11053120 DOI: 10.1038/s41420-024-01969-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 04/12/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
Periodontitis is a highly prevalent disease characterized by inflammation and destruction of tooth-supporting tissues that leads to tooth loss in extreme situations. Elucidating the underlying mechanisms of periodontitis pathogenesis and progression will establish the groundwork for developing effective treatment strategies. Recently, evidence concerning the role of ferroptosis in periodontitis progression has emerged. Osteogenic lineage cells are key regulators of bone remodeling. Osteogenic cell death, as observed in experimental periodontitis models, disrupts the balance between bone resorption and bone formation. However, whether the osteogenic lineage undergoes ferroptosis during periodontitis and the corresponding effect on periodontitis progression remain elusive. Here, we investigated cell-specific ferroptosis within the alveolar bone in a murine periodontitis model. Through immunofluorescence double staining and immunohistochemistry, we identified ferroptotic osteocytes and osteoblasts in inflammatory alveolar bone. Next, in vivo administration of erastin or liproxstatin-1 was conducted to either induce or inhibit ferroptosis, respectively. Severe bone resorption and inflammation, accompanied by increased osteoclast formation and impaired osteogenic potential were detected following ferroptosis activation. Subsequently, we carried out in vitro experiments on osteocytes and further verified that ferroptosis enhanced the osteocytic expression of RANKL and IL-6. These findings suggest that ferroptosis occurring within the osteogenic lineage acts as a catalyst in the progression of periodontitis by stimulating osteoclastogenesis through the secretion of inflammatory cytokines and inhibiting osteoblastic function, providing insights into ferroptosis-induced alterations in microenvironment-based intercellular communication. Ferroptosis is a promising target for controlling inflammation and preventing bone resorption in periodontitis.
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Affiliation(s)
- Yiqi Tang
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510055, PR China
| | - Sihui Su
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510055, PR China
| | - Rongcheng Yu
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510055, PR China
| | - Chenxi Liao
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510055, PR China
| | - Zhili Dong
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510055, PR China
| | - Chengyao Jia
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510055, PR China
| | - Vicky Yau
- Department of Oral and Maxillofacial Surgery, University at Buffalo, Buffalo, NY, 14214, USA
| | - Liping Wu
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510055, PR China.
| | - Weimin Guo
- Department of Orthopedic Surgery, Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, PR China.
| | - Jinxuan Zheng
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510055, PR China.
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14
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Yilmaz M, Yay E, Atalay N, Balci N, Kurgan Ş, Toygar H, Serdar MA. Do arginine metabolites have a role in periodontitis due to smoking? A new perspective. Oral Dis 2024; 30:743-753. [PMID: 36401797 DOI: 10.1111/odi.14448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 10/31/2022] [Accepted: 11/15/2022] [Indexed: 11/20/2022]
Abstract
OBJECTIVES Cigarette consumption is common around the world and besides its negative effects on health, and its effects on periodontitis draw attention. Arginine metabolites are involved in the pathogenesis of several systemic inflammatory diseases' including cardiovascular diseases. Our aim was to determine periodontitis and healthy individuals' arginine metabolites and IL-6 levels in saliva and serum and to evaluate those according to smoking status. MATERIALS AND METHODS The study consisted of four groups: healthy individuals (control [C]; n = 20), smokers with healthy periodontium (S-C; n = 20), nonsmokers with Stage-III Grade-B generalized periodontitis (P; n = 20) and smokers with Stage-III Grade-C generalized periodontitis (S-P; n = 18). Periodontal parameters were measured. Analysis of methylated arginine metabolites was performed by LC-MS/MS, and IL-6 levels were determined by ELISA kits. RESULTS In nonsmokers, salivary concentrations of asymmetric dimethylarginine (ADMA) and symmetrical dimethylarginine (SDMA) were higher in the periodontitis than control (p < 0.001, p = 0.010). Smokers with periodontitis exhibited higher ADMA (p = 0.033, p < 0.001) and arginine (p = 0.030, p = 0.001) saliva concentrations than smoking and nonsmoking controls. CONCLUSIONS Our results demonstrated that salivary concentrations of ADMA and SDMA were associated with periodontitis. Smoking increased ADMA, SDMA and NG -monomethyl L-arginine (L-NMMA) levels in serum only in periodontitis patients.
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Affiliation(s)
- Melis Yilmaz
- Department of Periodontology, Institute of Health Sciences, Istanbul Medipol University, Istanbul, Turkey
- Department of Periodontology, Faculty of Dentistry, Istanbul Medipol University, Istanbul, Turkey
| | - Ekin Yay
- Department of Periodontology, Institute of Health Sciences, Istanbul Medipol University, Istanbul, Turkey
- Department of Periodontology, Faculty of Dentistry, Istanbul Medipol University, Istanbul, Turkey
| | - Nur Atalay
- Department of Periodontology, Institute of Health Sciences, Istanbul Medipol University, Istanbul, Turkey
- Department of Periodontology, Faculty of Dentistry, Istanbul Medipol University, Istanbul, Turkey
| | - Nur Balci
- Department of Periodontology, Institute of Health Sciences, Istanbul Medipol University, Istanbul, Turkey
- Department of Periodontology, Faculty of Dentistry, Istanbul Medipol University, Istanbul, Turkey
| | - Şivge Kurgan
- Department of Periodontology, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Hilal Toygar
- Department of Periodontology, Institute of Health Sciences, Istanbul Medipol University, Istanbul, Turkey
- Department of Periodontology, Faculty of Dentistry, Istanbul Medipol University, Istanbul, Turkey
| | - Muhittin A Serdar
- Department of Medical Biochemistry, School of Medicine, Acıbadem University, Ankara, Turkey
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15
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Deng Y, Li Q, Svoboda KKH, Opperman LA, Ruest LB, Liu X. Gli1 + Periodontal Mesenchymal Stem Cells in Periodontitis. J Dent Res 2024; 103:279-288. [PMID: 38284236 DOI: 10.1177/00220345231220915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024] Open
Abstract
Periodontal mesenchymal stem cells (MSCs) play a crucial role in maintaining periodontium homeostasis and in tissue repair. However, little is known about how periodontal MSCs in vivo respond under periodontal disease conditions, posing a challenge for periodontium tissue regeneration. In this study, Gli1 was used as a periodontal MSC marker and combined with a Gli1-cre ERT2 mouse model for lineage tracing to investigate periodontal MSC fate in an induced periodontitis model. Our findings show significant changes in the number and contribution of Gli1+ MSCs within the inflamed periodontium. The number of Gli1+ MSCs that contributed to periodontal ligament homeostasis decreased in the periodontitis-induced teeth. While the proliferation of Gli1+ MSCs had no significant difference between the periodontitis and the control groups, more Gli1+ MSCs underwent apoptosis in diseased teeth. In addition, the number of Gli1+ MSCs for osteogenic differentiation decreased during the progression of periodontitis. Following tooth extraction, the contribution of Gli1+ MSCs to the tooth socket repair was significantly reduced in the periodontitis-induced teeth. Collectively, these findings indicate that the function of Gli1+ MSCs in periodontitis was compromised, including reduced contribution to periodontium homeostasis and impaired injury response.
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Affiliation(s)
- Y Deng
- Department of Biomedical Sciences, Texas A&M University School of Dentistry, Dallas, TX, USA
| | - Q Li
- Department of Biomedical Sciences, Texas A&M University School of Dentistry, Dallas, TX, USA
| | - K K H Svoboda
- Department of Biomedical Sciences, Texas A&M University School of Dentistry, Dallas, TX, USA
| | - L A Opperman
- Department of Biomedical Sciences, Texas A&M University School of Dentistry, Dallas, TX, USA
| | - L B Ruest
- Department of Biomedical Sciences, Texas A&M University School of Dentistry, Dallas, TX, USA
| | - X Liu
- Department of Biomedical Sciences, Texas A&M University School of Dentistry, Dallas, TX, USA
- Chemical and Biomedical Engineering Department, University of Missouri, Columbia, MO, USA
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16
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Li L, Jia L, Hou S, Zhang T, Zhou M, Chen T, Song J. Temporal and spatial effects on C-reactive protein's regulation of inducible nitric oxide synthase production in periodontal disease. J Periodontol 2024; 95:268-280. [PMID: 37515488 DOI: 10.1002/jper.22-0529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 05/14/2023] [Accepted: 07/22/2023] [Indexed: 07/31/2023]
Abstract
BACKGROUND Inducible nitric oxide synthase (iNOS) is associated with inflammation and osteoclastic differentiation in periodontal disease. This study was conducted to compare the time-dependent variation in iNOS production between the gingiva and other periodontal tissues and to explore the potential association with C-reactive protein (CRP) in early periodontal disease. METHODS Ligature-induced periodontal disease models (0-14 days) were established in wild-type and CRP knockout rats. Changes in CRP, iNOS, and autophagy levels were examined in the gingiva and other periodontal tissues. Macrophages were treated with lipopolysaccharide and chloroquine to explore the role of autophagy in iNOS production. iNOS, CRP, and autophagy-related proteins were analyzed using Western blotting, immunostaining, and enzyme-linked immunosorbent assays. mRNA expression was detected by quantitative real-time polymerase chain reaction. Hematoxylin and eosin staining was used for histological analysis. Cathepsin K immunostaining and microcomputed tomography of the maxillae were performed to compare alveolar bone resorption. RESULTS iNOS and CRP levels increased rapidly in periodontal tissues, as observed on Day 2 of ligature, then decreased more rapidly in the gingiva than in other periodontal tissues. CRP deficiency did not prevent iNOS generation, but effectively accelerated iNOS reduction and delayed alveolar bone loss. The CRP effect on iNOS was accompanied by a change in autophagy, which was reduced by CRP knockout. CONCLUSIONS The regulation of iNOS by CRP shows temporospatial variation in early periodontal disease and is potentially associated with autophagy. These findings may contribute to the early detection and targeted treatment of periodontal disease.
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Affiliation(s)
- Lingjie Li
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing, China
| | - Lurong Jia
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Municipal Key Laboratory for Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Siyu Hou
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing, China
| | - Tingwei Zhang
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing, China
| | - Mengjiao Zhou
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing, China
| | - Tao Chen
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Municipal Key Laboratory for Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Jinlin Song
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing, China
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17
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Estarreja J, Pimenta AC, Botelho J, Vilares AM, Mendes JJ, Rocha J, Pinto R, Mateus V, Machado V. Blood count, endocrine, immunologic, renal, and hepatic markers in a case-control animal study of induced periodontitis in female rodents. Front Physiol 2024; 15:1327399. [PMID: 38444766 PMCID: PMC10912185 DOI: 10.3389/fphys.2024.1327399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 01/31/2024] [Indexed: 03/07/2024] Open
Abstract
Introduction: Periodontitis is a non-communicable chronic inflammatory disease with a systemic burden. Animal models of induced periodontitis help elucidate the mechanisms by which periodontal inflammation drives systemic effects. Studying this systemic involvement over longer follow-up periods may provide a strong foundation for future research on the association between diseases and periodontitis, particularly in female rats. Therefore, we aimed to compare blood, endocrine, immunologic, renal, and hepatic markers in a rat model of induced periodontitis in females with their control counterparts. Methods: Experimental periodontitis was induced in 20 female Wistar rats by the application and maintenance of silk ligatures on the upper molars. The rats were then assessed for macroscopical analysis, complete blood count, and biochemical, endocrine, and immunologic markers at 21, 28, 42, and 56 days. Results: Chronic periodontal inflammation was observed after 42 days of exposure to the ligatures. Additionally, it was also possible to notice significant systemic manifestations, such as the reduction of triiodothyronine and thyroxine levels, along with an increase in the expression of alkaline phosphatase, gamma-glutamyl transpeptidase, and lactate dehydrogenase. Discussion: The study's findings imply that certain changes can be underscored to highlight a reduced risk of conception. Notably, previous investigations have indicated that subfertile women exhibit lower levels of thyroid hormones and elevated lactate dehydrogenase expression. Despite the absence of preclinical data delineating a possible association between periodontitis and female infertility, the results of this study may prove to be a crucial contribution to both the scientific and medical fields.
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Affiliation(s)
- João Estarreja
- H&TRC—Health and Technology Research Center, ESTeSL—Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Lisbon, Portugal
| | - Ana Clara Pimenta
- Clinical Research Unit (CRU), Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health & Science, Almada, Portugal
| | - João Botelho
- Clinical Research Unit (CRU), Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health & Science, Almada, Portugal
| | - Arminda Maria Vilares
- Laboratório de Fisiologia e Bioquímica do Exercício, Universidade de Lisboa Faculdade de Motricidade Humana, Lisboa, Portugal
| | - José João Mendes
- Clinical Research Unit (CRU), Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health & Science, Almada, Portugal
| | - João Rocha
- iMed.ULisboa, Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
| | - Rui Pinto
- iMed.ULisboa, Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
- Joaquim Chaves Saúde, Joaquim Chaves Laboratório de Análises Clínicas, Miraflores, Portugal
| | - Vanessa Mateus
- H&TRC—Health and Technology Research Center, ESTeSL—Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Lisbon, Portugal
- iMed.ULisboa, Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
| | - Vanessa Machado
- Clinical Research Unit (CRU), Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health & Science, Almada, Portugal
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Kuraji R, Ye C, Zhao C, Gao L, Martinez A, Miyashita Y, Radaic A, Kamarajan P, Le C, Zhan L, Range H, Sunohara M, Numabe Y, Kapila YL. Nisin lantibiotic prevents NAFLD liver steatosis and mitochondrial oxidative stress following periodontal disease by abrogating oral, gut and liver dysbiosis. NPJ Biofilms Microbiomes 2024; 10:3. [PMID: 38233485 PMCID: PMC10794237 DOI: 10.1038/s41522-024-00476-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 01/02/2024] [Indexed: 01/19/2024] Open
Abstract
Oral microbiome dysbiosis mediates chronic periodontal disease, gut microbial dysbiosis, and mucosal barrier disfunction that leads to steatohepatitis via the enterohepatic circulation. Improving this dysbiosis towards health may improve liver disease. Treatment with antibiotics and probiotics have been used to modulate the microbial, immunological, and clinical landscape of periodontal disease with some success. The aim of the present investigation was to evaluate the potential for nisin, an antimicrobial peptide produced by Lactococcus lactis, to counteract the periodontitis-associated gut dysbiosis and to modulate the glycolipid-metabolism and inflammation in the liver. Periodontal pathogens, namely Porphyromonas gingivalis, Treponema denticola, Tannerella forsythia and Fusobacterium nucleatum, were administrated topically onto the oral cavity to establish polymicrobial periodontal disease in mice. In the context of disease, nisin treatment significantly shifted the microbiome towards a new composition, commensurate with health while preventing the harmful inflammation in the small intestine concomitant with decreased villi structural integrity, and heightened hepatic exposure to bacteria and lipid and malondialdehyde accumulation in the liver. Validation with RNA Seq analyses, confirmed the significant infection-related alteration of several genes involved in mitochondrial dysregulation, oxidative phosphorylation, and metal/iron binding and their restitution following nisin treatment. In support of these in vivo findings indicating that periodontopathogens induce gastrointestinal and liver distant organ lesions, human autopsy specimens demonstrated a correlation between tooth loss and severity of liver disease. Nisin's ability to shift the gut and liver microbiome towards a new state commensurate with health while mitigating enteritis, represents a novel approach to treating NAFLD-steatohepatitis-associated periodontal disease.
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Affiliation(s)
- Ryutaro Kuraji
- Orofacial Sciences Department, School of Dentistry, University of California, San Francisco, San Francisco, CA, USA
- Department of Periodontology, The Nippon Dental University School of Life Dentistry at Tokyo, Tokyo, Japan
| | - Changchang Ye
- Orofacial Sciences Department, School of Dentistry, University of California, San Francisco, San Francisco, CA, USA
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontology, West China School of Stomatology, Sichuan University, Chengdu, China
| | - Chuanjiang Zhao
- Orofacial Sciences Department, School of Dentistry, University of California, San Francisco, San Francisco, CA, USA
- Department of Periodontology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Li Gao
- Orofacial Sciences Department, School of Dentistry, University of California, San Francisco, San Francisco, CA, USA
- Department of Periodontology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - April Martinez
- Orofacial Sciences Department, School of Dentistry, University of California, San Francisco, San Francisco, CA, USA
| | - Yukihiro Miyashita
- Department of Periodontology, The Nippon Dental University School of Life Dentistry at Tokyo, Tokyo, Japan
| | - Allan Radaic
- Orofacial Sciences Department, School of Dentistry, University of California, San Francisco, San Francisco, CA, USA
- Sections of Biosystems and Function and Periodontics, School of Dentistry, University of California Los Angeles, Los Angeles, CA, USA
| | - Pachiyappan Kamarajan
- Orofacial Sciences Department, School of Dentistry, University of California, San Francisco, San Francisco, CA, USA
- Sections of Biosystems and Function and Periodontics, School of Dentistry, University of California Los Angeles, Los Angeles, CA, USA
| | - Charles Le
- Orofacial Sciences Department, School of Dentistry, University of California, San Francisco, San Francisco, CA, USA
| | - Ling Zhan
- Orofacial Sciences Department, School of Dentistry, University of California, San Francisco, San Francisco, CA, USA
| | - Helene Range
- Orofacial Sciences Department, School of Dentistry, University of California, San Francisco, San Francisco, CA, USA
- Department of Periodontology, University of Rennes, UFR of Odontology; Service d'Odontologie, CHU de Rennes, Rennes, France
- INSERM CHU Rennes, Institut NUMECAN (Nutrition Metabolisms and Cancer); CIC 1414, Rennes, France
| | - Masataka Sunohara
- Department of Anatomy, The Nippon Dental University School of Life Dentistry at Tokyo, Tokyo, Japan
| | - Yukihiro Numabe
- Department of Periodontology, The Nippon Dental University School of Life Dentistry at Tokyo, Tokyo, Japan
| | - Yvonne L Kapila
- Orofacial Sciences Department, School of Dentistry, University of California, San Francisco, San Francisco, CA, USA.
- Sections of Biosystems and Function and Periodontics, School of Dentistry, University of California Los Angeles, Los Angeles, CA, USA.
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Song P, Hao Y, Lin D, Jin Y, Lin J. Evaluation of the antibacterial effect of Epigallocatechin gallate on the major pathogens of canine periodontal disease and therapeutic effects on periodontal disease mice. Front Microbiol 2024; 14:1329772. [PMID: 38249491 PMCID: PMC10797024 DOI: 10.3389/fmicb.2023.1329772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 12/07/2023] [Indexed: 01/23/2024] Open
Abstract
Background Periodontal disease (PD) is a prevalent oral affliction in canines, with limited therapeutic options available. The potential transmission of oral bacteria from canines to humans through inter-species contact poses a risk of zoonotic infection. Epigallocatechin gallate (EGCG), the principal catechin in green tea polyphenols, exhibits antibacterial properties effective against human PD. Given the clinical parallels between canine and human PD, this study explores the feasibility of employing EGCG as a therapeutic agent for canine PD. Methods and results Initially, a survey and statistical analysis of bacterial infection data related to canine PD in China were conducted. Subsequently, the primary pathogenic bacteria of canine PD were isolated and cultivated, and the in vitro antibacterial efficacy of EGCG was assessed. Furthermore, verify the therapeutic effect of EGCG on a mouse PD model in vivo. The high-throughput 16S rRNA gene sequencing identified Porphyromonas, Fusobacterium, Treponema, Moraxella, and Capnocytophaga as the genera that distinguishing PD from healthy canines' gingival crevicular fluid (GCF) samples in China. The anaerobic culture and drug susceptibility testing isolated a total of 92 clinical strains, representing 22 species, from 72 canine GCF samples, including Porphyromonas gulae, Prevotella intermedia, Porphyromonas macacae, etc. The minimum inhibitory concentration (MIC) ranging of EGCG was from 0.019 to 1.25 mg/mL. Following a 7 days oral mucosal administration of medium-dose EGCG (0.625 mg/mL), the abundance of periodontal microorganisms in PD mice significantly decreased. This intervention ameliorated alveolar bone loss, reducing the average cementoenamel junction to the alveolar bone crest (CEJ-ABC) distance from 0.306 mm ± 0.050 mm to 0.161 mm ± 0.026 mm. Additionally, EGCG (0.3125 mg/mL) markedly down-regulated the expression of inflammatory factor IL-6 in the serum of PD mice. Conclusion Our research demonstrates the significant antibacterial effects of EGCG against the prevalent bacterium P. gulae in canine PD. Moreover, EGCG exhibits anti-inflammatory properties and proves effective in addressing bone loss in a PD mouse model. These findings collectively suggest the therapeutic potential of EGCG in the treatment of canine PD. The outcomes of this study contribute valuable data, laying the foundation for further exploration and screening of alternative antibiotic drugs to advance the management of canine PD.
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Affiliation(s)
- Peijia Song
- Country National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
- China Veterinary Medicine Innovation Center, China Agricultural University, Beijing, China
| | - Yibing Hao
- China Agricultural University Veterinary Teaching Hospital, Beijing, China
| | - Degui Lin
- Country National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yipeng Jin
- Country National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jiahao Lin
- Country National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
- China Veterinary Medicine Innovation Center, China Agricultural University, Beijing, China
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20
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Khuda F, Baharin B, Anuar NNM, Satimin BSF, Nasruddin NS. Effective Modalities of Periodontitis Induction in Rat Model. J Vet Dent 2024; 41:49-57. [PMID: 37259505 DOI: 10.1177/08987564231178459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Induction of periodontal disease using the rat model is the preferred model for human periodontal disease studies that are related to gene expression, mechanisms of inflammatory regulation, microbial and host responses, resolution, and the healing process. There are 3 methods that are frequently used to induce periodontal disease, which are: ligature application, oral bacterial inoculation, and the lipopolysaccharide injection technique. In the ligature model, sterile non-absorbable sutures or orthodontic wires are widely used to induce local irritation and bacterial plaque accumulation. Secondly, mono and mixed cultures of periodontal bacteria are inoculated orally by gavage or topical application. Lastly, lipopolysaccharide extracted from pathogenic bacteria can be directly injected into the gingival sulcus to induce inflammation and stimulate osteoclastogenesis and alveolar bone loss. Among these methods, ligature application induces inflammation and alveolar bone resorption more promptly compared to other methods. This review will provide an overview of the main induction methods in experimental periodontal disease, with their advantages and disadvantages.
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Affiliation(s)
- Fazle Khuda
- Department of Craniofacial Diagnostics and Biosciences, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Badiah Baharin
- Faculty of Health Sciences, Programme of Biomedical Science, Centre for Toxicology and Health Risk Studies, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Nur Najmi Mohamad Anuar
- Department of Restorative Dentistry, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | | | - Nurrul Shaqinah Nasruddin
- Department of Craniofacial Diagnostics and Biosciences, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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21
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Verzeletti GN, Gaio EJ, Machado KG, Spuldaro TR, Demeda CF, Frassini R, Streck AF, Moura E Silva S, Rösing CK, Henriques JAP, Roesch-Ely M. Desmarestia anceps Montagne modulates inflammatory response in experimental periodontitis in male Wistar rats. Arch Oral Biol 2024; 157:105825. [PMID: 37918302 DOI: 10.1016/j.archoralbio.2023.105825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 09/25/2023] [Accepted: 10/14/2023] [Indexed: 11/04/2023]
Abstract
OBJECTIVE Desmarestia anceps Montagne (D. anceps) seaweed has been shown to play a range of biologic activities, such as anti-inflammatory and antioxidant properties. The purpose of this study was to investigate the effects of D. anceps on pathogenesis of ligature-induced experimental periodontitis in rats. DESIGN Fifty-four male Wistar rats were randomly divided into six groups. Doses of D. anceps (100 and 200 mg/kg) were administered for 14 days to animals with or without ligature-induced periodontitis, in order to compare to control groups (vehicle solution). Morphometric registration of alveolar bone loss and histological analysis were conducted. Inflammatory cells were counted on hematoxylin-eosin-stained slides. Immunohistochemical expressions for interleukin-1 beta (IL-1β), tumor necrosis factor (TNF-α), receptor activator of nuclear factor kappa-Β ligand (RANKL) and bone morphogenetic protein 2 (BMP-2) were evaluated. RESULTS Alveolar bone loss was higher in groups exposed to ligature-induced periodontitis, but no significant differences were observed comparing different treatment and control groups. Animals that received D. anceps extracts showed significant lower counts of inflammatory cells. D. anceps promoted increased expression of BMP-2 and inhibited IL-1β, TNF-α and RANKL. CONCLUSION D. anceps modulates inflammatory response in experimental periodontitis in rats. Further pharmacological and immunological analyses are warranted.
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Affiliation(s)
- Giliano Nicolini Verzeletti
- Biotechnology Institute, University of Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, RS 95070-560, Brazil; School of Dentistry, Department of Periodontology, University of Caxias do Sul, Rua Francisco Getúlio Vargas, 1130 Bloco S, Caxias do Sul, RS 95070-560, Brazil.
| | - Eduardo José Gaio
- Department of Periodontology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Keilla Gomes Machado
- Biotechnology Institute, University of Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, RS 95070-560, Brazil
| | - Tobias Rauber Spuldaro
- Department of Periodontology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Clarissa Favero Demeda
- School of Dentistry, Department of Periodontology, University of Caxias do Sul, Rua Francisco Getúlio Vargas, 1130 Bloco S, Caxias do Sul, RS 95070-560, Brazil
| | - Rafaele Frassini
- Biotechnology Institute, University of Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, RS 95070-560, Brazil
| | - André Felipe Streck
- Biotechnology Institute, University of Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, RS 95070-560, Brazil
| | - Sidnei Moura E Silva
- Biotechnology Institute, University of Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, RS 95070-560, Brazil
| | | | - João Antonio Pêgas Henriques
- Biotechnology Institute, University of Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, RS 95070-560, Brazil
| | - Mariana Roesch-Ely
- Biotechnology Institute, University of Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul, RS 95070-560, Brazil
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22
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Lima Teixeira JF, Henning P, Cintra Magalhães FA, Coletto-Nunes G, Floriano-Marcelino T, Westerlund A, Movérare-Skrtic S, Oliveira GJPL, Lerner UH, Souza PPC. Osteoprotective effect by interleukin-4 (IL-4) on lipoprotein-induced periodontitis. Cytokine 2023; 172:156399. [PMID: 37898012 DOI: 10.1016/j.cyto.2023.156399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 09/15/2023] [Accepted: 10/05/2023] [Indexed: 10/30/2023]
Abstract
Lipoproteins are immunostimulatory bacterial components suggested to participate in inflammation-induced bone loss in periodontal disease through stimulation of osteoclast differentiation. Toll-like receptor 2 activation by Pam2CSK4 (PAM2), known to mimic bacterial lipoproteins, was previously shown to enhance periodontal bone resorption in mice. The anti-inflammatory cytokine interleukin-4 (IL-4) is a known inhibitor of RANKL-induced bone resorption in vitro. Here, we have investigated whether IL-4 could decrease PAM2-induced periodontal bone loss and osteoclastogenesis in vivo. In a model of periodontitis induced by gingival injections of PAM2 in mice, concomitant injections of IL-4 reduced bone loss. Histologically, IL-4 reduced the recruitment of inflammatory cells and the formation of TRAP+ osteoclasts stimulated by PAM2. Mouse bone marrow macrophages (BMMs) and neonatal calvarial osteoblasts were used to assess the effect of IL-4 on PAM2-induced osteoclastogenesis in vitro. In RANKL-primed BMMs stimulated by PAM2 Nfatc1, Ctsk, and Acp5 gene expression was up-regulated and resulted in robust formation of TRAP+ multinucleated osteoclasts, effects which were impaired by IL-4. These effects were mediated by impairment in PAM2-induced c-fos expression. In primary calvarial osteoblast cultures, IL-4 decreased PAM2-induced Tnfsf11 (encoding RANKL) mRNA and enhanced Tnfrsf11b (encoding OPG) expression. Our data demonstrate that the osteoprotective effect by IL-4 on lipoprotein-induced periodontal disease occurs through the inhibition of osteoclastogenesis by three mechanisms, one by acting directly on osteoclast progenitors, another by acting indirectly through decreasing the expression of osteoclast-regulating cytokines in osteoblasts and a third by decreasing inflammation.
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Affiliation(s)
- Jorge F Lima Teixeira
- Department of Pathology and Physiology, School of Dentistry at Araraquara, Univ. Est. Paulista - UNESP, Araraquara, Brazil
| | - Petra Henning
- Sahlgrenska Osteoporosis Centre and Centre for Bone and Arthritis Research at Department of Internal Medicine and Clinical Nutrition, Institute for Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | | | - Glaucia Coletto-Nunes
- Department of Pathology and Physiology, School of Dentistry at Araraquara, Univ. Est. Paulista - UNESP, Araraquara, Brazil
| | - Thais Floriano-Marcelino
- Department of Pathology and Physiology, School of Dentistry at Araraquara, Univ. Est. Paulista - UNESP, Araraquara, Brazil
| | - Anna Westerlund
- Sahlgrenska Osteoporosis Centre and Centre for Bone and Arthritis Research at Department of Internal Medicine and Clinical Nutrition, Institute for Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Sofia Movérare-Skrtic
- Sahlgrenska Osteoporosis Centre and Centre for Bone and Arthritis Research at Department of Internal Medicine and Clinical Nutrition, Institute for Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Guilherme J P L Oliveira
- Department of Periodontology and Implantodontology, Dental School, Federal University of Uberlândia - UFU, Uberlândia, Brazil
| | - Ulf H Lerner
- Sahlgrenska Osteoporosis Centre and Centre for Bone and Arthritis Research at Department of Internal Medicine and Clinical Nutrition, Institute for Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Pedro Paulo C Souza
- Innovation in Biomaterials Laboratory (iBioM), Faculty of Dentistry, Federal University of Goiás - UFG, Goiânia, Brazil.
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Zhang Y, Zhang Y, Tan Y, Luo X, Jia R. Increased RBP4 and Asprosin Are Novel Contributors in Inflammation Process of Periodontitis in Obese Rats. Int J Mol Sci 2023; 24:16739. [PMID: 38069063 PMCID: PMC10706687 DOI: 10.3390/ijms242316739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/13/2023] [Accepted: 11/22/2023] [Indexed: 12/18/2023] Open
Abstract
There is a significant comorbidity between obesity and periodontitis, while adipokines are pivotal in the immunoinflammatory process, which may play a role in this special relationship. We aimed to assess the effect of adipokines as mediators in the progression of periodontitis in obese Sprague Dawley rats. Rats were divided into four groups: normal body weight with and without periodontitis and obesity with and without periodontitis. Experimental obesity and periodontitis were induced by a high-fat diet or ligaturing, and the effect was measured using metabolic and micro-computed tomography analysis and histological staining. Compared with the other three groups, the group of periodontitis with obesity (OP) had the heaviest alveolar bone absorption, the largest increase in osteoclasts, the utmost inflammatory cell infiltration and the highest expressions of pro-inflammatory cytokines and nuclear factor-kappa B ligand (RANKL); meanwhile, its expression of the osteogenesis-related gene was the lowest among the four groups. The expressions of leptin, visfatin, resistin, retinol-binding protein 4 (RBP4) and asprosin were upregulated, while adiponectin was decreased significantly in OP. The strong positive associations between the periodontal or circulating levels of RBP4 (or asprosin) and the degree of alveolar resorption in experimental periodontitis and obese rats were revealed. The upregulated expression of inflammation biomarkers, the corresponding degradation in connective tissue and the generation of osteoclasts in periodontitis were activated and exacerbated in obesity. The elevated level of RBP4/asprosin may contribute to a more severe periodontal inflammatory state in obese rats.
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Affiliation(s)
- Yuwei Zhang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China; (Y.Z.); (Y.Z.)
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, Xi’an 710004, China
- Department of Prosthodontics, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
| | - Yifei Zhang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China; (Y.Z.); (Y.Z.)
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, Xi’an 710004, China
- Department of Prosthodontics, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
| | - Yutian Tan
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China;
| | - Xiao Luo
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China;
| | - Ru Jia
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China; (Y.Z.); (Y.Z.)
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, Xi’an 710004, China
- Department of Digital Oral Implantology and Prosthodontics, College of Stomatology, Xi’an Jiaotong University, Xi’an 710004, China
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Li S, Zeng W, Liu G, Zang J, Yu X. Evaluation of morphological, histological, and immune-related cellular changes in ligature-induced experimental periodontitis in mice. J Dent Sci 2023; 18:1716-1722. [PMID: 37799858 PMCID: PMC10547956 DOI: 10.1016/j.jds.2023.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/02/2023] [Indexed: 01/13/2023] Open
Abstract
Background/purpose The ligature-induced periodontitis model is an effective approach to induce inflammation and bone loss similar to that of human periodontitis. Previous clinical and in vitro studies have shown the involvement of lymphocytes in periodontitis, while, the local and systemic profile of immune cells associated with periodontitis in the ligature-induced periodontitis model in mice remains unclear. Materials and methods Experimental periodontitis was constructed in mice by ligating around the maxillary second molars for 14 and 28 days, respectively. Alveolar bone loss was assessed by micro-computed tomography (micro-CT). Hematoxylin and eosin (H&E) and tartrate-resistant acid phosphatase (TRAP) staining were used to evaluate the histological changes in the periodontal tissues. B and T cells in the cervical lymph nodes, spleen, and peripheral blood were analyzed by flow cytometry. Results The 14-day ligation effectively induced significant periodontal inflammation and alveolar bone loss in C57BL/6J mice, which were progressive and maintained for a relatively long-term period until day 28. In addition, CD3+ T cells and CD19+ B cells were the dominant population in both health and disease, and the B cell population within the cervical lymph nodes (LN) increased significantly under periodontitis condition, while, no significant differences of the T and B cell population among the spleen and peripheral blood were observed. Conclusion The ligature-induced periodontitis mice model was established to perform a longitudinal assessment of changes in periodontal tissues morphologically and histologically, meanwhile, explore the local and systemic changes of the predominant immune-associated cells.
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Affiliation(s)
- Shiyi Li
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Wenmin Zeng
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Guojing Liu
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Jing Zang
- Department of Periodontology, Peking University Third Hospital, Beijing, China
| | - Xiaoqian Yu
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
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25
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Ye J, Wen Z, Wu T, Chen L, Sheng L, Wang C, Teng C, Wu B, Xu J, Wei W. Single-Cell Sequencing Reveals the Optimal Time Window for Anti-Inflammatory Treatment in Spinal Cord Injury. Adv Biol (Weinh) 2023; 7:e2300098. [PMID: 37085744 DOI: 10.1002/adbi.202300098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/02/2023] [Indexed: 04/23/2023]
Abstract
Though the occurrence of neuroinflammation after spinal cord injury (SCI) is essential for antigen clearance and tissue repair, excessive inflammation results in cell death and axon dieback. The effect of anti-inflammatory medicine used in clinical treatment remains debatable owing to the inappropriate therapeutic schedule that does not align with the biological process of immune reaction. A better understanding of the immunity process is critical to promote effective anti-inflammatory therapeutics. However, cellular heterogeneity, which results in complex cellular functions, is a major challenge. This study performs single-cell RNA sequencing by profiling the tissue proximity to the injury site at different time points after SCI. Depending on the analysis of single-cell data and histochemistry observation, an appropriate time window for anti-inflammatory medicine treatment is proposed. This work also verifies the mechanism of typical anti-inflammatory medicine methylprednisolone sodium succinate (MPSS), which is found attributable to the activation inhibition of cells with pro-inflammatory phenotype through the downregulation of pathways such as TNF, IL2, and MIF. These pathways can also be provided as targets for anti-inflammatory treatment. Collectively, this work provides a therapeutic schedule of 1-3 dpi (days post injury) to argue against classical early pulse therapy and provides some pathways for target therapy in the future.
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Affiliation(s)
- Jingjia Ye
- International Institutes of Medicine, the Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang, 322000, China
| | - Zhengfa Wen
- International Institutes of Medicine, the Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang, 322000, China
| | - Tianxin Wu
- International Institutes of Medicine, the Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang, 322000, China
| | - Liangliang Chen
- College of Computer Science and Technology, Zhejiang University, Hangzhou, 310000, China
| | - Lingchao Sheng
- International Institutes of Medicine, the Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang, 322000, China
| | - Chenhuan Wang
- International Institutes of Medicine, the Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang, 322000, China
| | - Chong Teng
- International Institutes of Medicine, the Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang, 322000, China
| | - Bingbing Wu
- International Institutes of Medicine, the Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang, 322000, China
| | - Jian Xu
- International Institutes of Medicine, the Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang, 322000, China
| | - Wei Wei
- International Institutes of Medicine, the Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang, 322000, China
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Liu X, Hou Y, Yang M, Xin X, Deng Y, Fu R, Xiang X, Cao N, Liu X, Yu W, Yang B, Zhou Y. N-Acetyl-l-cysteine-Derived Carbonized Polymer Dots with ROS Scavenging via Keap1-Nrf2 Pathway Regulate Alveolar Bone Homeostasis in Periodontitis. Adv Healthc Mater 2023; 12:e2300890. [PMID: 37279380 DOI: 10.1002/adhm.202300890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/30/2023] [Indexed: 06/08/2023]
Abstract
Periodontitis is a type of chronic inflammatory oral disease characterized by the destruction of periodontal connective tissue and progressive alveolar bone resorption. As oxidative stress is the key cause of periodontitis in the early periodontal microenvironment, antioxidative therapy has been considered a viable treatment for periodontitis. However, more stable and effective reactive oxygen species (ROS)-scavenging nanomedicines are still highly needed due to the instability of traditional antioxidants. Herein, a new type of N-acetyl-l-cysteine (NAC)-derived red fluorescent carbonized polymer dots (CPDs) has been synthesized with excellent biocompatibility, which can serve as an extracellular antioxidant to scavenge ROS effectively. Moreover, NAC-CPDs can promote osteogenic differentiation in human periodontal ligament cells (hPDLCs) under H2 O2 stimulation. In addition, NAC-CPDs are capable of targeted accumulation in alveolar bone in vivo, reducing the level of alveolar bone resorption in periodontitis mice, as well as performing fluorescence imaging in vitro and in vivo. In terms of mechanism, NAC-CPDs may regulate redox homeostasis and promote bone formation in the periodontitis microenvironment by modulating the kelch-like ECH-associated protein l (Keap1)/nuclear factor erythroid 2-related factor 2 (Nrf2) pathway. This study provides a new strategy for the application of CPDs theranostic nanoplatform for periodontitis.
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Affiliation(s)
- Xinchan Liu
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
| | - Yubo Hou
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
| | - Mingxi Yang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
- Joint Laboratory of Opto-Functional Theranostics in Medicine and Chemistry, The First Hospital of Jilin University, Changchun, 130021, P. R. China
| | - Xirui Xin
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
| | - Yu Deng
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
| | - Ruobing Fu
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
| | - Xingchen Xiang
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
| | - Niuben Cao
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
| | - Xiaomeng Liu
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
| | - Weixian Yu
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
| | - Bai Yang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
- Joint Laboratory of Opto-Functional Theranostics in Medicine and Chemistry, The First Hospital of Jilin University, Changchun, 130021, P. R. China
| | - Yanmin Zhou
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
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Roldan L, Montoya C, Solanki V, Cai KQ, Yang M, Correa S, Orrego S. A Novel Injectable Piezoelectric Hydrogel for Periodontal Disease Treatment. ACS APPLIED MATERIALS & INTERFACES 2023; 15:43441-43454. [PMID: 37672788 DOI: 10.1021/acsami.3c08336] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Periodontal disease is a multifactorial, bacterially induced inflammatory condition characterized by the progressive destruction of periodontal tissues. The successful nonsurgical treatment of periodontitis requires multifunctional technologies offering antibacterial therapies and promotion of bone regeneration simultaneously. For the first time, in this study, an injectable piezoelectric hydrogel (PiezoGEL) was developed after combining gelatin methacryloyl (GelMA) with biocompatible piezoelectric fillers of barium titanate (BTO) that produce electrical charges when stimulated by biomechanical vibrations (e.g., mastication, movements). We harnessed the benefits of hydrogels (injectable, light curable, conforms to pocket spaces, biocompatible) with the bioactive effects of piezoelectric charges. A thorough biomaterial characterization confirmed piezoelectric fillers' successful integration with the hydrogel, photopolymerizability, injectability for clinical use, and electrical charge generation to enable bioactive effects (antibacterial and bone tissue regeneration). PiezoGEL showed significant reductions in pathogenic biofilm biomass (∼41%), metabolic activity (∼75%), and the number of viable cells (∼2-3 log) compared to hydrogels without BTO fillers in vitro. Molecular analysis related the antibacterial effects to be associated with reduced cell adhesion (downregulation of porP and fimA) and increased oxidative stress (upregulation of oxyR) genes. Moreover, PiezoGEL significantly enhanced bone marrow stem cell (BMSC) viability and osteogenic differentiation by upregulating RUNX2, COL1A1, and ALP. In vivo, PiezoGEL effectively reduced periodontal inflammation and increased bone tissue regeneration compared to control groups in a mice model. Findings from this study suggest PiezoGEL to be a promising and novel therapeutic candidate for the treatment of periodontal disease nonsurgically.
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Affiliation(s)
- Lina Roldan
- Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, Pennsylvania 19140, United States
- Bioengineering Research Group (GIB), Universidad EAFIT, Medellín 050037, Colombia
| | - Carolina Montoya
- Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, Pennsylvania 19140, United States
| | - Varun Solanki
- Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, Pennsylvania 19140, United States
| | - Kathy Q Cai
- Histopathology Facility, Fox Chase Cancer, Temple University, Philadelphia, Pennsylvania 19140, United States
| | - Maobin Yang
- Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, Pennsylvania 19140, United States
- Department of Endodontology, Kornberg School of Dentistry, Temple University, Philadelphia, Pennsylvania 19140, United States
| | - Santiago Correa
- Bioengineering Research Group (GIB), Universidad EAFIT, Medellín 050037, Colombia
| | - Santiago Orrego
- Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, Pennsylvania 19140, United States
- Bioengineering Department, College of Engineering, Temple University. Philadelphia, Pennsylvania 19122, United States
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Moiseev D, Donskov S, Dubrovin I, Kulyukina M, Vasil’ev Y, Volel B, Shadieva S, Babaev A, Shevelyuk J, Utyuzh A, Velichko E, Dydykin S, Dydykina I, Paramonov Y, Faustova E. A New Way to Model Periodontitis in Laboratory Animals. Dent J (Basel) 2023; 11:219. [PMID: 37754339 PMCID: PMC10527576 DOI: 10.3390/dj11090219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/20/2023] [Accepted: 09/15/2023] [Indexed: 09/28/2023] Open
Abstract
The prevalence of periodontal diseases is increasing, tends to increase with age and is considered as one of the main causes of tooth loss. To assess the effectiveness of new methods of treatment of periodontal diseases, studies on laboratory animals can be promising. THE AIM OF THE STUDY to develop a new method of accelerated modeling of experimental periodontitis on laboratory animals. MATERIAL AND METHODS The study was carried out on 22 female rats. A wire ligature was applied to the cervical area of the incisors of the animals in an eight-shaped manner. Plaque obtained from a patient with periodontitis was placed under the wire, and nicotine and ethyl alcohol solutions were injected under the gingival mucosa. A complex index has been proposed to assess inflammation. At the end of the experiment the animals were euthanized, their jaws were dissected into dentoalveolar blocks and further descriptive histologic analysis was performed. RESULTS On the second day the gingiva of the rats acquired a cyanotic-pink color, on the fourth day the consistency of the gingiva became friable, mobility appeared in the lower incisors. Complex index of inflammation in animals of the main group: before the study-9, on the 7th day-195. Gingival preparations showed signs of exudative inflammation. In alveolar processes-irreversible resorption of bone structures. The difference of indicators in animals before and after the experiment was statistically significant (p < 0.05). CONCLUSION The new experimental model of periodontitis is reproduced in a short period of time, provides intensive development of inflammation, leads to disruption of the integrity of epithelial and connective tissue attachment, destruction of alveolar bone.
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Affiliation(s)
- Denis Moiseev
- N.I. Pirogov Russian National Research Medical University, Ostrovitianov Str. 1, 117997 Moscow, Russia; (D.M.)
| | - Sergey Donskov
- Tver State Medical University, Sovetskaya Str., 4, 170100 Tver, Russia; (S.D.); (I.D.)
| | - Ivan Dubrovin
- Tver State Medical University, Sovetskaya Str., 4, 170100 Tver, Russia; (S.D.); (I.D.)
| | - Mariya Kulyukina
- Tver State Medical University, Sovetskaya Str., 4, 170100 Tver, Russia; (S.D.); (I.D.)
| | - Yuriy Vasil’ev
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str., 8, p. 2, 119048 Moscow, Russia (E.V.)
| | - Beatrice Volel
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str., 8, p. 2, 119048 Moscow, Russia (E.V.)
| | - Shodiya Shadieva
- Bukhara State Medical Institute Named after Abu Ali ibn Sino, A.Navai Str. 1, Bukhara 200101, Uzbekistan
| | - Aleksey Babaev
- N.I. Pirogov Russian National Research Medical University, Ostrovitianov Str. 1, 117997 Moscow, Russia; (D.M.)
| | - Juliya Shevelyuk
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str., 8, p. 2, 119048 Moscow, Russia (E.V.)
| | - Anatolij Utyuzh
- N.A. Semashko National Research Institute of Public Health, Vorontsovo Pole Str., 12, Building 1, 105064 Moscow, Russia
| | - Ellina Velichko
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str., 8, p. 2, 119048 Moscow, Russia (E.V.)
| | - Sergey Dydykin
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str., 8, p. 2, 119048 Moscow, Russia (E.V.)
| | - Irina Dydykina
- V.A. Nasonova Research Institute of Rheumatology, 34A Kashirskoe Highway, 115522 Moscow, Russia
| | - Yuri Paramonov
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya Str., 8, p. 2, 119048 Moscow, Russia (E.V.)
| | - Ekaterina Faustova
- N.I. Pirogov Russian National Research Medical University, Ostrovitianov Str. 1, 117997 Moscow, Russia; (D.M.)
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Ma L, Chen R, Zhang Y, Dai Z, Huang G, Yang R, Yang H. The tree shrew as a new animal model for the study of periodontitis. J Clin Periodontol 2023; 50:1075-1088. [PMID: 37353986 DOI: 10.1111/jcpe.13842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 06/02/2023] [Accepted: 06/09/2023] [Indexed: 06/25/2023]
Abstract
AIM Periodontitis is an inflammatory, infectious disease of polymicrobial origin that can damage tooth-supporting bone and tissue. Tree shrews, evolutionarily closer to humans than commonly used rodent models, have been increasingly used as biomedical models. However, a tree shrew periodontitis model has not yet been established. MATERIALS AND METHODS Periodontitis was induced in male tree shrews/Sprague-Dawley rats by nylon thread ligature placement around the lower first molars. Thereafter, morphometric and histological analyses were performed. The distance from the cemento-enamel junction to the alveolar bone crest was measured using micro-computed tomography. Periodontal pathological tissue damage, inflammation and osteoclastogenesis were assessed using haematoxylin and eosin staining and quantitative immunohistochemistry, respectively. RESULTS Post-operatively, gingival swelling, redness and spontaneous bleeding were observed in tree shrews but not in rats. After peaking, bone resorption decreased gradually until plateauing in tree shrews. Contrastingly, rapid and near-complete bone loss was observed in rats. Inflammatory infiltrates were observed 1 week post operation in both models. However, only the tree shrew model transitioned from acute to chronic inflammation. CONCLUSIONS Our study revealed that a ligature-induced tree shrew model of periodontitis partly reproduced the pathological features of human periodontitis and provided theoretical support for using tree shrews as a potential model for human periodontitis.
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Affiliation(s)
- Liya Ma
- Yunnan Key Laboratory of Stomatology and Department of Dental Research, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming, People's Republic of China
- Department of Orthodontics, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Rui Chen
- Yunnan Key Laboratory of Stomatology and Department of Dental Research, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Yelin Zhang
- Yunnan Key Laboratory of Stomatology and Department of Dental Research, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Zichao Dai
- Yunnan Key Laboratory of Stomatology and Department of Dental Research, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Guobin Huang
- Yunnan Key Laboratory of Stomatology and Department of Dental Research, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Rongqiang Yang
- Yunnan Key Laboratory of Stomatology and Department of Dental Research, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Hefeng Yang
- Yunnan Key Laboratory of Stomatology and Department of Dental Research, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming, People's Republic of China
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Yoon H, Jung BH, Yoo KY, Lee JB, Um HS, Chang BS, Lee JK. Temporal changes of periodontal tissue pathology in a periodontitis animal model. J Periodontal Implant Sci 2023; 53:248-258. [PMID: 36468486 PMCID: PMC10465809 DOI: 10.5051/jpis.2203420171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/04/2022] [Accepted: 10/19/2022] [Indexed: 08/29/2023] Open
Abstract
PURPOSE This study aimed to characterize the early stages of periodontal disease and determine the optimal period for its evaluation in a mouse model. The association between the duration of ligation and its effect on the dentogingival area in mice was evaluated using micro-computed tomography (CT) and histological analysis. METHODS Ninety mice were allocated to an untreated control group or a ligation group in which periodontitis was induced by a 6-0 silk ligation around the left second maxillary molar. Mice were sacrificed at 1, 2, 3, 4, 5, 8, 11, and 14 days after ligature placement. Alveolar bone destruction was evaluated using micro-CT. Histological analysis was performed to assess the immune-inflammatory processes in the periodontal tissue. RESULTS No significant difference in alveolar bone loss was found compared to the control group until day 3 after ligature placement, and a gradual increase in alveolar bone loss was observed from 4 to 8 days following ligature placement. No significant between-group differences were observed after 8 days. The histological analysis demonstrated that the inflammatory response was evident from day 4. CONCLUSIONS Our findings in a mouse model provide experimental evidence that ligature-induced periodontitis models offer a consistent progression of disease with marginal attachment down-growth, inflammatory infiltration, and alveolar bone loss.
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Affiliation(s)
- Hyunpil Yoon
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Bo Hyun Jung
- Department of Anatomy and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Ki-Yeon Yoo
- Department of Anatomy and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Jong-Bin Lee
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Heung-Sik Um
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Beom-Seok Chang
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Jae-Kwan Lee
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea.
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Ancuta DL, Alexandru DM, Crivineanu M, Coman C. Induction of Periodontitis Using Bacterial Strains Isolated from the Human Oral Microbiome in an Experimental Rat Model. Biomedicines 2023; 11:2098. [PMID: 37626595 PMCID: PMC10452127 DOI: 10.3390/biomedicines11082098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/07/2023] [Accepted: 07/12/2023] [Indexed: 08/27/2023] Open
Abstract
Periodontal disease is that condition resulting in the destruction of periodontal tissues, bone resorption, and tooth loss, the etiology of which is linked to immunological and microbiological factors. The aim of this study was to evaluate the potential trigger of periodontal disease in a rat model using bacterial species incriminated in the pathology of human periodontitis and to establish their optimal concentrations capable of reproducing the disease, with the idea of subsequently developing innovative treatments for the condition. In this study, we included 15 male Wistar rats, aged 20 weeks, which we divided into three groups. In each group, we applied ligatures with gingival retraction wire on the maxillary incisors. The ligature and the gingival sac were contaminated by oral gavage with a mixture of fresh cultures of Aggregatibacter actinomycetemcomitans (A.a), Fusobacterium nucleatum (F.n) and Streptococcus oralis (S.o) in concentrations of 108, 109, and 1010 CFU/mL each for 5 days a week for 4 weeks. During the clinical monitoring period of 28 days, overlapped with the period of oral contamination, we followed the expression of clinical signs specific to periodontitis. We also monitored the evolution of body weight and took weekly samples from the oral cavity for the microbiological identification of the tested bacteria and blood samples for hematological examination. At the end of the study, the animals were euthanized, and the ligated incisors were taken for histopathological analysis. The characteristic symptomatology of periodontal disease was expressed from the first week of the study and was maintained until the end, and we were able to identify the bacteria during each examination. Hematologically, the number of neutrophils decreased dramatically (p < 0.0001) in the case of the 109 group, unlike the other groups, as did the number of lymphocytes. Histopathologically, we identified neutrophilic infiltrate in all groups, as well as the presence of coccobacilli, periodontal tissue hyperplasia, and periodontal lysis. In the 109 group, we also observed pulpal tissue with necrotic bone fragments and pyogranulomatous inflammatory reaction. By corroborating the data, we can conclude that for the development of periodontal disease using A.a, F.n, and S.o, a concentration of 109 or 1010 CFU/mL is required, which must necessarily contaminate a ligature thread applied to the level of the rat's dental pack.
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Affiliation(s)
- Diana Larisa Ancuta
- Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine, 050097 Bucharest, Romania; (D.M.A.); (M.C.); (C.C.)
- Cantacuzino National Medical Military Institute for Research and Development, 050096 Bucharest, Romania
| | - Diana Mihaela Alexandru
- Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine, 050097 Bucharest, Romania; (D.M.A.); (M.C.); (C.C.)
| | - Maria Crivineanu
- Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine, 050097 Bucharest, Romania; (D.M.A.); (M.C.); (C.C.)
| | - Cristin Coman
- Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine, 050097 Bucharest, Romania; (D.M.A.); (M.C.); (C.C.)
- Cantacuzino National Medical Military Institute for Research and Development, 050096 Bucharest, Romania
- Center of Excellence in Translational Medicine, Fundeni Clinical Institute, 022328 Bucharest, Romania
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de Mello-Neto JM, Ervolino E, Elangovan G, Toro LF, Lee J, Gustafsson A, Figueredo CMDS. The Resolution of Periodontal Inflammation Promotes Changes in Cytokine Expression in the Intestine and Gingival Tissues of Aged Rats with DSS-Induced Colitis. J Clin Med 2023; 12:4326. [PMID: 37445360 DOI: 10.3390/jcm12134326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/22/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
Our research aimed to explore how resolving periodontal inflammation impacts cytokine expression in the colons of aged Wistar rats. Research studies involving animals have been conducted to investigate the two-way relationship between periodontitis and inflammatory bowel disease (IBD), where chronic inflammation in either the mouth or intestines can negatively affect the other. We allocated seventeen male Wistar rats aged between 8 and 11 months to one of four groups: (1) ligature-induced periodontitis (LIP) without the resolution of periodontal inflammation (RPI) (LIP; n = 4), (2) LIP + RPI (n = 4), (3) LIP + dextran-sulphate-sodium-induced colitis (DIC) without RPI (n = 4), and LIP + DIC + RPI (n = 5). We performed histopathological and immunological analyses on periodontal and intestinal tissues and analysed cytokine expressions using a Rat Cytokine 23-Plex Immunoassay. Our findings showed that animals with and without DIC who underwent RPI showed significantly lower levels of IL-2, IL-4, IL-5, IL-10, IL-13, IL-17, IL-18, and TNF-α in the intestine compared to those without treatment. The RPI effectively reduced the number of inflammatory cells in the lamina propria and restored the epithelial barrier in the intestine in animals with DIC. The resolution of periodontal inflammation significantly reduced the levels of pro-inflammatory cytokines and chemokines in the intestines of aged rats with and without DSS-induced colitis.
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Affiliation(s)
- João Martins de Mello-Neto
- College of Medicine and Dentistry, James Cook University, Cairns, QLD 4870, Australia
- School of Medicine and Dentistry, Griffith University, Brisbane, QLD 4111, Australia
| | - Edilson Ervolino
- Department of Basic Sciences, School of Dentistry, São Paulo State University-UNESP, Araçatuba 16015-050, SP, Brazil
| | - Gayathiri Elangovan
- School of Medicine and Dentistry, Griffith University, Brisbane, QLD 4111, Australia
| | - Luan Felipe Toro
- Department of Basic Sciences, School of Dentistry, São Paulo State University-UNESP, Araçatuba 16015-050, SP, Brazil
| | - Jaehee Lee
- School of Medicine and Dentistry, Griffith University, Brisbane, QLD 4111, Australia
| | - Anders Gustafsson
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Carlos Marcelo da Silva Figueredo
- School of Medicine and Dentistry, Griffith University, Brisbane, QLD 4111, Australia
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, 171 77 Stockholm, Sweden
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Lee MJ, Ryu HH, Hwang JW, Kim JR, Cho ES, Choi JK, Moon YJ. Sirt6 Activation Ameliorates Inflammatory Bone Loss in Ligature-Induced Periodontitis in Mice. Int J Mol Sci 2023; 24:10714. [PMID: 37445896 PMCID: PMC10341680 DOI: 10.3390/ijms241310714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/21/2023] [Accepted: 06/25/2023] [Indexed: 07/15/2023] Open
Abstract
Periodontitis is an inflammatory disease caused by microorganisms that induce the destruction of periodontal tissue. Inflamed and damaged tissue produces various inflammatory cytokines, which activate osteoclasts and induce alveolar bone loss and, eventually, tooth loss. Sirt6 expression suppresses inflammation and bone resorption; however, its role in periodontitis remains unclear. We hypothesized that Sirt6 has a protective role in periodontitis. To understand the role of Sirt6 in periodontitis, we compared periodontitis with ligature placement around the maxillary left second molar in 8-week-old control (C57BL/6J) male mice to Sirt6-overexpressing Tg (Sirt6Tg) mice, and we observed the resulting phenotypes using micro-CT. MDL801, a Sirt6 activator, was used as a therapy for periodontitis through oral gavage. Pro-inflammatory cytokines and increased osteoclast numbers were observed in alveolar bone tissue under periodontitis surgery. In the same condition, interestingly, protein levels from Sirt6 were the most downregulated among sirtuins in alveolar bone tissue. Based on micro-CT and CEJ-ABC distance, Sirt6Tg was observed to resist bone loss against ligature-induced periodontitis. Furthermore, the number of osteoclasts was significantly reduced in Sirt6Tg-ligated mice compared with control-ligated mice, although systemic inflammatory cytokines did not change. Consistent with this observation, we confirmed that bone loss was significantly reduced when MDL801, a Sirt6 activator, was included in the ligation mouse model. Our findings demonstrate that Sirt6 activation prevents bone loss against ligature-induced periodontitis. Thus, a Sirt6 activator may provide a new therapeutic approach for periodontitis.
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Affiliation(s)
- Myung Jin Lee
- Department of Chemistry, Case Western Reserve University, Cleveland, OH 44106, USA;
| | - Hyang Hwa Ryu
- Department of Biochemistry and Molecular Biology, Jeonbuk National University Medical School, Jeonju 54896, Republic of Korea; (H.H.R.); (J.W.H.)
| | - Jae Won Hwang
- Department of Biochemistry and Molecular Biology, Jeonbuk National University Medical School, Jeonju 54896, Republic of Korea; (H.H.R.); (J.W.H.)
| | - Jung Ryul Kim
- Department of Orthopaedic Surgery, Jeonbuk National University Medical School and Hospital, Jeonju 54896, Republic of Korea;
| | - Eui-Sic Cho
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences, Jeonbuk National University School of Dentistry, Jeonju 54896, Republic of Korea;
| | - Jin Kyeong Choi
- Department of Immunology, Jeonbuk National University Medical School, Jeonju 54907, Republic of Korea
| | - Young Jae Moon
- Department of Biochemistry and Molecular Biology, Jeonbuk National University Medical School, Jeonju 54896, Republic of Korea; (H.H.R.); (J.W.H.)
- Department of Orthopaedic Surgery, Jeonbuk National University Medical School and Hospital, Jeonju 54896, Republic of Korea;
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Almarhoumi R, Alvarez C, Harris T, Tognoni CM, Paster BJ, Carreras I, Dedeoglu A, Kantarci A. Microglial cell response to experimental periodontal disease. J Neuroinflammation 2023; 20:142. [PMID: 37316834 PMCID: PMC10265806 DOI: 10.1186/s12974-023-02821-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 05/29/2023] [Indexed: 06/16/2023] Open
Abstract
OBJECTIVES Microglial activation is critical for modulating the neuroinflammatory process and the pathological progression of neurodegenerative diseases, such as Alzheimer's disease (AD). Microglia are involved in forming barriers around extracellular neuritic plaques and the phagocytosis of β-amyloid peptide (Aβ). In this study, we tested the hypothesis that periodontal disease (PD) as a source of infection alters inflammatory activation and Aβ phagocytosis by the microglial cells. METHODS Experimental PD was induced using ligatures in C57BL/6 mice for 1, 10, 20, and 30 days to assess the progression of PD. Animals without ligatures were used as controls. Maxillary bone loss and local periodontal tissue inflammation associated with the development of PD were confirmed by morphometric bone analysis and cytokine expression, respectively. The frequency and the total number of activated microglia (CD45+ CD11b+ MHCII+) in the brain were analyzed by flow cytometry. Mouse microglial cells (1 × 105) were incubated with heat-inactivated bacterial biofilm isolated from the ligatures retrieved from the teeth or with Klebsiella variicola, a relevant PD-associated bacteria in mice. Expression of pro-inflammatory cytokines, toll-like receptors (TLR), and receptors for phagocytosis was measured by quantitative PCR. The phagocytic capacity of microglia to uptake β-amyloid was analyzed by flow cytometry. RESULTS Ligature placement caused progressive periodontal disease and bone resorption that was already significant on day 1 post-ligation (p < 0.05) and continued to increase until day 30 (p < 0.0001). The severity of periodontal disease increased the frequency of activated microglia in the brains on day 30 by 36%. In parallel, heat-inactivated PD-associated total bacteria and Klebsiella variicola increased the expression of TNFα, IL-1β, IL-6, TLR2, and TLR9 in microglial cells (1.6-, 83-, 3.2-, 1.5-, 1.5-fold, respectively p < 0.01). Incubation of microglia with Klebsiella variicola increased the Aβ-phagocytosis by 394% and the expression of the phagocytic receptor MSR1 by 33-fold compared to the non-activated cells (p < 0.0001). CONCLUSIONS We showed that inducing PD in mice results in microglia activation in vivo and that PD-associated bacteria directly promote a pro-inflammatory and phagocytic phenotype in microglia. These results support a direct role of PD-associated pathogens in neuroinflammation.
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Affiliation(s)
- Rawan Almarhoumi
- Forsyth Institute, 245 First Street, Cambridge, MA 02142 USA
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA 02115 USA
- Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Carla Alvarez
- Forsyth Institute, 245 First Street, Cambridge, MA 02142 USA
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA 02115 USA
| | - Theodore Harris
- Forsyth Institute, 245 First Street, Cambridge, MA 02142 USA
| | - Christina M. Tognoni
- Department of Veterans Affairs, VA Boston Healthcare System, Research and Development Service, Building 1A-(151), 150 S. Huntington Avenue, Boston, MA 02130 USA
- Department of Neurology, Boston University School of Medicine, Boston, MA 02118 USA
| | - Bruce J. Paster
- Forsyth Institute, 245 First Street, Cambridge, MA 02142 USA
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA 02115 USA
| | - Isabel Carreras
- Department of Veterans Affairs, VA Boston Healthcare System, Research and Development Service, Building 1A-(151), 150 S. Huntington Avenue, Boston, MA 02130 USA
- Department of Neurology, Boston University School of Medicine, Boston, MA 02118 USA
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118 USA
| | - Alpaslan Dedeoglu
- Department of Veterans Affairs, VA Boston Healthcare System, Research and Development Service, Building 1A-(151), 150 S. Huntington Avenue, Boston, MA 02130 USA
- Department of Neurology, Boston University School of Medicine, Boston, MA 02118 USA
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114 USA
| | - Alpdogan Kantarci
- Forsyth Institute, 245 First Street, Cambridge, MA 02142 USA
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA 02115 USA
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Zhou Q, Liu J, Yan J, Guo Z, Zhang F. Magnetic microspheres mimicking certain functions of macrophages: Towards precise antibacterial potency for bone defect healing. Mater Today Bio 2023; 20:100651. [PMID: 37206878 PMCID: PMC10189291 DOI: 10.1016/j.mtbio.2023.100651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/27/2023] [Accepted: 04/29/2023] [Indexed: 05/21/2023] Open
Abstract
A variety of novel biomaterials have recently been developed to promote bone regeneration. However, the current biomaterials cannot accurately and effectively resist bacterial invasion. In this study, we constructed microspheres that mimic certain functions of macrophages as additives to bone repair materials, which can be manipulated as demanded to resist bacteria effectively and protect bone defect healing. Firstly, we prepared gelatin microspheres (GMSs) by an emulsion-crosslinking method, which were subsequently coated with polydopamine (PDA). Then, amino antibacterial nanoparticles obtained by a nanoprecipitation-self-assembly method and commercial amino magnetic nanoparticles were modified onto these PDA-coated GMSs to construct the functionalized microspheres (FMSs). The results showed that the FMSs possessed a rough topography and could be manipulated by a 100-400 mT static magnetic field to migrate directionally in unsolidified hydrogels. Moreover, in vitro experiments with near-infrared (NIR) showed that the FMSs had a sensitive and recyclable photothermal performance and could capture and kill Porphyromonas gingivalis by releasing reactive oxygen species. Finally, the FMSs were mixed with osteogenic hydrogel precursor, injected into the Sprague-Dawley rat periodontal bone defect of maxillary first molar (M1), and subsequently driven by magnetism to the cervical surface of M1 and the outer surface of the gel system for targeted sterilization under NIR, thus protecting the bone defect healing. In conclusion, the FMSs had excellent manipulation and antimicrobial performances. This provided us with a promising strategy to construct light-magnetism-responsive antibacterial materials to build a beneficial environment for bone defect healing.
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Affiliation(s)
- Qiao Zhou
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
- Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, 210029, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, 210029, China
| | - Jun Liu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, 210029, China
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Jia Yan
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
- Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, 210029, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, 210029, China
| | - Zhaobin Guo
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Feimin Zhang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
- Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, 210029, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, 210029, China
- Corresponding author. Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University; Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, 210029, China.
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Helal MB, Alsherif AA. The ameliorating role of epithelial cell rests of Malassez in the alleviation of experimentally-induced periodontitis in rats. Arch Oral Biol 2023; 149:105658. [PMID: 36867954 DOI: 10.1016/j.archoralbio.2023.105658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 02/16/2023] [Accepted: 02/19/2023] [Indexed: 02/25/2023]
Abstract
OBJECTIVE The present study aimed to investigate the effect of experimentally-induced periodontitis on epithelial cell rests of Malassez (ERM) distribution and its subsequent role in regenerating periodontal ligament (PDL). DESIGN The study included 60 rats, aged seven months, randomly and equally divided into two groups: Group I, the control group, and Group II, the experimental group, in which ligature-periodontitis was induced. Ten rats from each group were euthanized at 1, 2, and 4 weeks. For ERM detection, specimens were processed for histological and immunohistochemical examination of cytokeratin-14. Additionally, specimens were prepared for the transmission electron microscope. RESULTS Group I demonstrated well-organized PDL fibers with few ERM clumps close to the cervical root portion. In contrast, one week after periodontitis induction, Group II showed marked degeneration, a damaged cluster of ERM cells, narrowing of the PDL space, and early signs of PDL hyalinization. After two weeks, a disorganized PDL was observed with the detection of small ERM clumps enclosing very few cells. After four weeks, PDL fibers were reorganized, and ERM clusters increased significantly. Notably, ERM cells were positive for CK14 in all groups. CONCLUSION Early-stage ERM may be affected by periodontitis. However, ERM is capable of recovering its putative role in PDL maintenance.
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Affiliation(s)
| | - Aya Anwar Alsherif
- Lecturer of Oral Biology, Faculty of Dentistry, Tanta University, Egypt.
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Soares MA, Costa ALA, Silva NLC, Martins AF, Matias DO, Araujo OMO, Lopes RT, Takiya CM, Miranda ALP, Miranda-Alves L, Tributino JLM. Atypical antipsychotics olanzapine and clozapine increase bone loss in female rats with experimental periodontitis. J Periodontal Res 2023; 58:283-295. [PMID: 36575324 DOI: 10.1111/jre.13090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 11/01/2022] [Accepted: 12/12/2022] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND OBJECTIVES Periodontitis is a highly prevalent disease in psychiatric patients, including those undergoing symptomatic treatment with second-generation antipsychotics. Some of these drugs, such as clozapine (CLO) and olanzapine (OLA), have prominent metabolic effects such as weight gain, hyperglycemia, and dyslipidemia, which are risk factors for periodontitis. In addition to the metabolic effects, there are reports of changes in salivary flow, gingival bleeding, and caries. In this context, we aimed to evaluate if the metabolic effects of OLA and CLO alter periodontal parameters in an animal model of periodontitis without the environmental and psychosocial biases inherent to human diseases. METHODS In the first set of experiments, male and female adult Wistar rats received oral administration of CLO, OLA, or vehicle for 45 days. They were evaluated for body mass composition and weight gain, blood glucose parameters (fasting and glucose tolerance and insulin resistance tests), and lipid profile (HDL, total cholesterol, and triglycerides). In a second set of experiments, the same measurements were performed in female rats exposed to the antipsychotics for 45 days and ligature-induced periodontitis on the 30th day of treatment. Macroscopic measurements of exposed roots, microtomography in the furcation region of the first molar, and histological evaluation of the region between the first and second molars were evaluated to assess bone loss. Additionally, gingival measurements of myeloperoxidase activity and pro-inflammatory cytokine TNF-α were made. RESULTS Only females exposed to OLA had more significant weight gain than controls. They also exhibited differences in glucose metabolism. Ligature-induced periodontitis produced intense bone retraction without changing the density of the remaining structures. The bone loss was even higher in rats with periodontitis treated with OLA or CLO and was accompanied by a local increase in TNF-α caused by CLO. These animals, however, did not exhibit the same metabolic impairments observed for animals without periodontitis. CONCLUSION The use of clozapine and olanzapine may be a risk factor for periodontal disease, independent of systemic metabolic alterations.
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Affiliation(s)
- Mariana Alves Soares
- Laboratório de Estudos em Farmacologia Experimental (LEFEx), Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Programa de Pós-Graduação em Farmacologia e Química Medicinal, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - André Luiz A Costa
- Laboratório de Estudos em Farmacologia Experimental (LEFEx), Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Natália L C Silva
- Laboratório de Estudos em Farmacologia Experimental (LEFEx), Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Aline França Martins
- Laboratório de Estudos em Farmacologia Experimental (LEFEx), Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Daiane Oliveira Matias
- Laboratório de Estudos em Farmacologia Experimental (LEFEx), Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Olga M O Araujo
- Laboratório de Instrumentação Nuclear (LIN), Programa de Engenharia Nuclear (PEN), Instituto Alberto Luiz de Coimbra de Pós-Graduação e Pesquisa de Engenharia (COPPE-UFRJ), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ricardo Tadeu Lopes
- Laboratório de Instrumentação Nuclear (LIN), Programa de Engenharia Nuclear (PEN), Instituto Alberto Luiz de Coimbra de Pós-Graduação e Pesquisa de Engenharia (COPPE-UFRJ), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Christina Maeda Takiya
- Laboratório de Patologia Celular, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana Luisa P Miranda
- Laboratório de Estudos em Farmacologia Experimental (LEFEx), Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Leandro Miranda-Alves
- Laboratório de Endocrinologia Experimental (LEEx), Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jorge L M Tributino
- Laboratório de Farmacologia Molecular (LFM), Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
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Kou Y, Jiang Y, Liu S, Yang P, Lu Y, Liu H, Li M. Regulatory T cells showed characteristics of T helper-17(Th17) cells in mice periodontitis model. Oral Dis 2023; 29:1149-1162. [PMID: 34741371 DOI: 10.1111/odi.14072] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/29/2021] [Accepted: 10/29/2021] [Indexed: 01/05/2023]
Abstract
OBJECTIVES This study aimed to clarify the regulatory role of Th17-Treg balance in periodontitis and further reveal Treg plasticity. MATERIALS AND METHODS An experimental periodontitis model was established by ligation and injection of Pg-LPS. Inflammatory factors were measured by ELISA and RT-PCR. Alveolar bone absorption was evaluated by micro-CT and histomorphology. Quantities of Treg and Th17 cell and their related gene expression were examined. Furthermore, after magnetic bead-sorting spleen Treg cells, Treg/Th17 characteristic genes were explored. Immunofluorescence double staining of Foxp3 and IL-17 was conducted to further reveal Treg plasticity. RESULTS Inflammatory cytokines in serum and gingival tissue increased significantly in periodontitis, which revealed obvious crestal bone loss. Further analysis showed that the number of Th17 cells and expression of related genes increased more significantly than Treg cells, demonstrating Treg-Th17 imbalance. Flow cytometry showed that the proportions of Treg cells in the blood and spleen were lower in periodontitis group. Furthermore, Foxp3 was downregulated, and Rorc/ IL-17A were increased in Treg cells of periodontitis group. Immunofluorescence double staining showed significantly increased number of IL-17+Foxp3+ cells in periodontitis. CONCLUSIONS These results provided evidence that Treg cells showed characteristics of Th17 cells in mice with periodontitis, although its mechanisms require further study.
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Affiliation(s)
- Yuying Kou
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Yujun Jiang
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Shanshan Liu
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Panpan Yang
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Yupu Lu
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Hongrui Liu
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
- Department of Periodontology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Minqi Li
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
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Wang RPH, Huang J, Chan KWY, Leung WK, Goto T, Ho YS, Chang RCC. IL-1β and TNF-α play an important role in modulating the risk of periodontitis and Alzheimer's disease. J Neuroinflammation 2023; 20:71. [PMID: 36915108 PMCID: PMC10012546 DOI: 10.1186/s12974-023-02747-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 02/21/2023] [Indexed: 03/16/2023] Open
Abstract
BACKGROUND Systemic activation of the immune system can exert detrimental effects on the central nervous system. Periodontitis, a chronic disease of the oral cavity, is a common source of systemic inflammation. Neuroinflammation might be a result of this to accelerate progressive deterioration of neuronal functions during aging or exacerbate pre-existing neurodegenerative diseases, such as Alzheimer's disease. With advancing age, the progressive increase in the body's pro-inflammatory status favors the state of vulnerability to both periodontitis and Alzheimer's disease. In the present study, we sought to delineate the roles of cytokines in the pathogenesis of both diseases. METHODS To examine the impacts of periodontitis on the onset and progression of Alzheimer's disease, 6-month-old female 3 × Tg-AD mice and their age-matched non-transgenic mice were employed. Periodontitis was induced using two different experimental models: heat-killed bacterial-induced periodontitis and ligature-induced periodontitis. To delineate the roles of pro-inflammatory cytokines in the pathogenesis of periodontitis and Alzheimer's disease, interleukin 1 beta (IL-1β) and tumor necrosis factor-alpha (TNF-α) were also injected into the buccal mandibular vestibule of mice. RESULTS Here, we show that IL-1β and TNF-α were two of the most important and earliest cytokines upregulated upon periodontal infection. The systemic upregulation of these two cytokines promoted a pro-inflammatory environment in the brain contributing to the development of Alzheimer's disease-like pathology and cognitive dysfunctions. Periodontitis-induced systemic inflammation also enhanced brain inflammatory responses and subsequently exacerbated Alzheimer's disease pathology and cognitive impairment in 3 × Tg-AD mice. The role of inflammation in connecting periodontitis to Alzheimer's disease was further affirmed in the conventional magnetization transfer experiment in which increased glial responses resulting from periodontitis led to decreased magnetization transfer ratios in the brain of 3 × Tg-AD mice. CONCLUSIONS Systemic inflammation resulting from periodontitis contributed to the development of Alzheimer's disease tau pathology and subsequently led to cognitive decline in non-transgenic mice. It also potentiated Alzheimer's disease pathological features and exacerbated impairment of cognitive function in 3 × Tg-AD mice. Taken together, this study provides convincing evidence that systemic inflammation serves as a connecting link between periodontitis and Alzheimer's disease.
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Affiliation(s)
- Rachel Pei-Hsuan Wang
- Laboratory of Neurodegenerative Diseases, School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Laboratory Block, Rm. L4-49, 21 Sassoon Road, Pokfulam, Hong Kong SAR, China
| | - Jianpan Huang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, China
| | - Kannie Wai Yan Chan
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, China
| | - Wai Keung Leung
- Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
| | - Tetsuya Goto
- Division of Oral Anatomy and Histology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Yuen-Shan Ho
- School of Nursing, Faculty of Health and Social Sciences, Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong SAR, China
| | - Raymond Chuen-Chung Chang
- Laboratory of Neurodegenerative Diseases, School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Laboratory Block, Rm. L4-49, 21 Sassoon Road, Pokfulam, Hong Kong SAR, China. .,State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Pokfulam, Hong Kong SAR, China.
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Apaza Alccayhuaman KA, Heimel P, Lee JS, Tangl S, Kuchler U, Marchesan J, Panahipour L, Lettner S, Matalová E, Gruber R. FasL is a catabolic factor in alveolar bone homeostasis. J Clin Periodontol 2023; 50:396-405. [PMID: 36384160 PMCID: PMC10946845 DOI: 10.1111/jcpe.13750] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/20/2022] [Accepted: 11/06/2022] [Indexed: 11/18/2022]
Abstract
AIM Fas ligand (FasL) belongs to the tumour necrosis factor superfamily regulating bone turnover, inflammation, and apoptosis. The appendicular and axial skeleton phenotype of mature Faslgld mice has been reported. The impact of FasL on the alveolar bone providing support for the teeth at mature stages under healthy and induced inflammatory conditions remains unknown. MATERIALS AND METHODS We performed a phenotypical analysis of mice carrying the homozygous Faslgld mutation and wild-type (WT) mice (C57BL/6) under healthy conditions and upon ligature-induced periodontitis. After 12 days, micro-computed tomography analysis revealed the distance between the cement enamel junction and the alveolar bone crest. Additional structural parameters, such as the bone volume fraction (BV/TV) and the periodontal ligament space volume, were measured. Histological analyses were performed to visualize the catabolic changes at the defect site. RESULTS Healthy Faslgld mice were found to have more periodontal bone than their WT littermates. Faslgld had no significant effect on inflammatory osteolysis compared to WT controls with ligatures. Histology revealed eroded surfaces at the root and in the inter-proximal bone in both strains. CONCLUSIONS Our findings suggest that FasL is a catabolic factor in alveolar bone homeostasis but it does not affect the inflammatory osteolysis.
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Affiliation(s)
- Karol Alí Apaza Alccayhuaman
- Department of Oral BiologyUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
- Karl Donath Laboratory for Hard Tissue and Biomaterial ResearchUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
| | - Patrick Heimel
- Karl Donath Laboratory for Hard Tissue and Biomaterial ResearchUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
- Department for BioimagingLudwig Boltzmann Institute for Traumatology, The Research Center in Cooperation With AUVAViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
| | - Jung Seok Lee
- Department of Oral BiologyUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
- Department of PeriodontologyResearch Institute for Periodontal Regeneration, College of Dentistry, Yonsei UniversitySeoulRepublic of Korea
| | - Stefan Tangl
- Karl Donath Laboratory for Hard Tissue and Biomaterial ResearchUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
| | - Ulrike Kuchler
- Department of Oral SurgeryUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
| | - Julie Marchesan
- Division of Comprehensive Oral HealthAdams School of Dentistry, University of North Carolina at Chapel HillChapel HillNorth CarolinaUSA
| | - Layla Panahipour
- Department of Oral BiologyUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
| | - Stefan Lettner
- Karl Donath Laboratory for Hard Tissue and Biomaterial ResearchUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
| | - Eva Matalová
- Laboratory of Odontogenesis and OsteogenesisInstitute of Animal Physiology and Genetics, Czech Academy of SciencesBrnoCzech Republic
| | - Reinhard Gruber
- Department of Oral BiologyUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
- Department of PeriodontologySchool of Dental Medicine, University of BernBernSwitzerland
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Perez-Pacheco CG, Fernandes NAR, Camilli AC, Ferrarezi DP, Silva AF, Zunareli MC, Amantino CF, Primo FL, Guimarães-Stabilli MR, Junior CR. Local administration of curcumin-loaded nanoparticles enhances periodontal repair in vivo. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2023; 396:311-321. [PMID: 36326894 DOI: 10.1007/s00210-022-02310-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 10/14/2022] [Indexed: 11/05/2022]
Abstract
The aim was to assess the influence of local application of curcumin-loaded nanoparticles on an experimental model of periodontal repair. Periodontitis was induced by ligatures on both lower first molars of rats. After 15 days, ligatures were removed ("treatment") and animals were randomly allocated to three experimental groups (n = 8/group): (i) 0.05 mg/ml curcumin-loaded nanoparticles, (ii) empty nanoparticles (vehicle control), and (iii) sterile saline (negative control). Experimental treatments were administered locally on days 0, 3, 5, 7, 9, and 11 after ligature removal. Animals were euthanized at 7 and 14 days. Bone repair was assessed by microcomputer tomography (µCT). Histological sections were stained with hematoxylin/eosin (H/E), Picrosirius Red, and Masson's trichrome. Expression of Runx-2 was studied by immunohistochemistry. Gene expression of Itgam, Arg1, and Inos was assessed by RT-qPCR. At 7 days, there was increased gene expression of Itgam and Arg1 and of the relative expression of Arg1/Inos in curcumin-treated animals, but no difference in any other outcomes. At 14 days, curcumin-loaded nanoparticles significantly increased bone repair and collagen content, as well as the number of osteocytes, percentage of extracellular matrix, and expression of Runx2. The results demonstrate that local administration of curcumin-loaded nanoparticles enhanced tissue repair in an experimental model of periodontal repair. Nanoparticle-encapsulated curcumin enhances early post-treatment repair of periodontal tissues.
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Affiliation(s)
- Cindy Grace Perez-Pacheco
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University (UNESP), Rua Humaitá, 1680 - Centro, Araraquara, SP, 14801-903, Brazil.,Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Natalie Aparecida Rodrigues Fernandes
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University (UNESP), Rua Humaitá, 1680 - Centro, Araraquara, SP, 14801-903, Brazil
| | - Angelo Constantino Camilli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University (UNESP), Rua Humaitá, 1680 - Centro, Araraquara, SP, 14801-903, Brazil
| | - Danilo Paschoal Ferrarezi
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University (UNESP), Rua Humaitá, 1680 - Centro, Araraquara, SP, 14801-903, Brazil
| | - Amanda Favoreto Silva
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University (UNESP), Rua Humaitá, 1680 - Centro, Araraquara, SP, 14801-903, Brazil
| | - Mayara Cristina Zunareli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University (UNESP), Rua Humaitá, 1680 - Centro, Araraquara, SP, 14801-903, Brazil
| | - Camila Fernanda Amantino
- Department of Bioprocess and Biotechnology, School of Pharmaceutical Sciences at Araraquara, Sao Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Fernando Lucas Primo
- Department of Bioprocess and Biotechnology, School of Pharmaceutical Sciences at Araraquara, Sao Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Morgana Rodrigues Guimarães-Stabilli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University (UNESP), Rua Humaitá, 1680 - Centro, Araraquara, SP, 14801-903, Brazil
| | - Carlos Rossa Junior
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University (UNESP), Rua Humaitá, 1680 - Centro, Araraquara, SP, 14801-903, Brazil.
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Al Bayaty FH, Mahmod SA, Jamil Al-Obaidi MM, Emad Ibrahim O, Dahir A, Adam FA, Albandar JM. Effect of osteoarthritis on alveolar bone loss in experimental periodontitis in rats. J Periodontal Res 2023; 58:22-28. [PMID: 36321414 DOI: 10.1111/jre.13064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/30/2022] [Accepted: 10/07/2022] [Indexed: 01/17/2023]
Abstract
BACKGROUND There is scarce information about the relationship between periodontal disease and osteoarthritis. This study investigated the effect of surgically induced osteoarthritis on alveolar bone loss in experimental periodontitis in rats. METHODS 12 rats were divided into test and control groups. On day 1, the animals were anaesthetized, and silk ligatures were ligated around 6 maxillary posterior teeth in each animal from both groups. Surgical induction of osteoarthritis was performed on the left knees in the test group. No knee surgeries were performed in the control group. The ligatures were kept in place for 30 days, at which time the animals were euthanatized, and the maxillae and knee joints were harvested and processed for histological analysis. The alveolar bone loss was assessed using a zoom stereomicroscope. RESULTS The knee joint histologic sections of the control group showed normal joint features, whereas in the test group there were substantial changes typical of osteoarthritis, including wide joint spaces, prominent monocytic infiltration of the synovium, invasion of periarticular bone, and decreased chondrocyte density. Comparison of the bone height between the groups showed a significantly higher bone loss in the test than in the control group The marginal mean bone height, adjusted for covariates and the intraclass correlation between sites, was 1.19 and 0.78 mm in the test and control groups, respectively (p < .0001). CONCLUSIONS Surgically induced osteoarthritis leads to greater alveolar bone loss in the experimental periodontitis model in rats.
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Affiliation(s)
- Fouad H Al Bayaty
- Center for Periodontology Studies, Faculty of Dentistry, Universiti Teknologi MARA, Campus Sg Buloh, Jalan Hospital, Sungai Buloh, Malaysia
| | - Suhaeb A Mahmod
- Hospital Gleaneagles Medini Johor Bahru, Iskandar Puteri, Malaysia
| | | | - Omar Emad Ibrahim
- Pathology Department, International Medical School (IMS), Management & Science University (MSU), Shah Alam, Malaysia
| | - Akil Dahir
- International Medical University, Federal Territory of Kuala Lumpur, Malaysia
| | - Fara Azwin Adam
- Center for Periodontology Studies, Faculty of Dentistry, Universiti Teknologi MARA, Campus Sg Buloh, Jalan Hospital, Sungai Buloh, Malaysia
| | - Jasim M Albandar
- Department of Periodontology and Oral Implantology, Temple University School of Dentistry, Philadelphia, Pennsylvania, USA
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43
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Jiao J, Tian Y, Li Y, Liang Y, Deng S, Wang W, Wang Y, Lin Y, Tian Y, Li C. Metal-organic framework-based nanoplatform enhance fibroblast activity to treat periodontitis. Dent Mater J 2023; 42:19-29. [PMID: 36244739 DOI: 10.4012/dmj.2022-096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
After periodontal tissue injury, reconstruct soft tissue sealing around the tooth surface is of fundamental importance to treat periodontitis. Among multiple cell types, fibroblast plays a central role in reestablishing functional periodontium. To enhance fibroblast activity, a novel metal-organic framework-based nanoplatform is fabricated using mesoporous Prussian blue (MPB) nanoparticles to load baicalein (BA), named MPB-BA. Drug release test displayed sustained BA release of MPB-BA. Cell proliferation, transwell migration and wound healing tests revealed accelerated fibroblast proliferation and migration for the established MPB-BA nanoplatform. Moreover, vinculin immunofluorescence staining, western blot and quantitative real-time PCR analysis showed up-regulated vinculin protein and integrin α5 and integrin β1 gene expressions for MPB-BA, suggesting improved cell adhesion. In addition, hematoxylin and eosin (H&E) and Masson trichromatic staining suggested superior anti-inflammatory and collagen fiber reconstruction effects for MPB-BA in a rat experimental periodontitis model in vivo. Our study may provide a promising strategy for the treatment of periodontitis.
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Affiliation(s)
- Jian Jiao
- School of Dentistry, Stomatological Hospital, Tianjin Medical University.,Department of Stomatology, General Hospital, Tianjin Medical University
| | - Yujuan Tian
- School of Dentistry, Stomatological Hospital, Tianjin Medical University
| | - Ying Li
- School of Dentistry, Stomatological Hospital, Tianjin Medical University
| | - Yunkai Liang
- School of Dentistry, Stomatological Hospital, Tianjin Medical University
| | - Shu Deng
- Department of Stomatology, Second Hospital, Tianjin Medical University
| | - Wanmeng Wang
- School of Dentistry, Stomatological Hospital, Tianjin Medical University
| | - Yuwei Wang
- School of Dentistry, Stomatological Hospital, Tianjin Medical University
| | - Yi Lin
- School of Dentistry, Stomatological Hospital, Tianjin Medical University
| | - Yuan Tian
- School of Dentistry, Stomatological Hospital, Tianjin Medical University
| | - Changyi Li
- School of Dentistry, Stomatological Hospital, Tianjin Medical University
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Anti-Periodontitis Effects of Dendropanax morbiferus H.Lév Leaf Extract on Ligature-Induced Periodontitis in Rats. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020849. [PMID: 36677905 PMCID: PMC9862488 DOI: 10.3390/molecules28020849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/11/2023] [Accepted: 01/12/2023] [Indexed: 01/19/2023]
Abstract
Periodontitis is caused by pathogens in the oral cavity. It is a chronic infectious disease that causes symptoms including gingival bleeding and tooth loss resulting from the destruction of periodontal tissues coupled with inflammation. Dendropanax morbiferus H.Lév (DM) is a natural product that exhibits various biological activities with few side effects. In this study, the potential of DM leaf hot-water extracts (DMWE) as a treatment for periodontitis was determined and its anti-oxidant and anti-inflammatory effects were evaluated. Compounds in DMWE were identified by high-performance liquid chromatography (HPLC) and nitric oxide (NO) and prostaglandin E2 (PGE2) production was measured in RAW 264.7 cells. We measured the gingival index and gingival sulcus depth, and micro-CT was performed in vivo using a ligature-induced periodontitis rat model, which is similar to human periodontitis. The DMWE-treated group exhibited a decrease in cytokine concentration and relieved the gingival index and gingival sulcus depth compared with the periodontitis-induced control group. In addition, micro-CT and histological analysis revealed that DMWE exhibited anti-inflammatory effects and improved alveolar bone loss in periodontitis-induced rats. These findings suggest that DMWE has excellent anti-oxidant and anti-inflammatory effects that protect and prevent periodontal tissue damage and tooth loss caused by the inflammatory response.
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45
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Zhang X, Xu M, Xue Q, He Y. A modified method for constructing experimental rat periodontitis model. Front Bioeng Biotechnol 2023; 10:1098015. [PMID: 36714614 PMCID: PMC9873956 DOI: 10.3389/fbioe.2022.1098015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 12/22/2022] [Indexed: 01/12/2023] Open
Abstract
Background: Periodontitis is a prevalent disease caused teeth lost. The present rat models inducing periodontitis with thread ligature and metal steel ligature have some disadvantages. Methods: We modified the existing rat ligature periodontitis model by fixing the thread ligature on the metal steel ligature passed through the gap between the first and second molars of rats with detailed modeling steps and illustrations. We research the pathological process of the periodontitis induced by the modified model, and briefly compared the modified model with the thread ligature model and the metal steel ligature model. Result: Our experimental results showed that there was an aggravation in inflammatory infiltration and alveolar bone resorption in modeling area within 14 days of initial induction. After that, the inflammatory infiltration was reduced. And no significant increase in alveolar bone destruction appeared. The modified model was more reliable compared to the thread ligature model, and had greater ability of bacterial aggregation compared to the metal steel ligature model. Conclusion: The modified method covered pathological process of the periodontitis, and showed sufficient efficiency and reliability in inducing rat periodontitis.
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Affiliation(s)
- Xuyang Zhang
- Department of Orthodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China,Chongqing Key Laboratory of Oral Disease and Biomedical Sciences, Stomatological Hospital of Chongqing Medical University, Chongqing, China
| | - Minglu Xu
- Department of Orthodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China,Chongqing Key Laboratory of Oral Disease and Biomedical Sciences, Stomatological Hospital of Chongqing Medical University, Chongqing, China
| | - Qin Xue
- Department of Orthodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China,Chongqing Key Laboratory of Oral Disease and Biomedical Sciences, Stomatological Hospital of Chongqing Medical University, Chongqing, China
| | - Yao He
- Department of Orthodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Stomatological Hospital of Chongqing Medical University, Chongqing, China,*Correspondence: Yao He,
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Treatment of Periodontal Inflammation in Diabetic Rats with IL-1ra Thermosensitive Hydrogel. Int J Mol Sci 2022; 23:ijms232213939. [PMID: 36430410 PMCID: PMC9693501 DOI: 10.3390/ijms232213939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/05/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
Periodontitis is a chronic inflammatory disease that is considered to be the main cause of adult tooth loss. Diabetes mellitus (DM) has a bidirectional relationship with periodontitis. Interleukin-1β (IL-1β) is an important pre-inflammatory factor, which participates in the pathophysiological process of periodontitis and diabetes. The interleukin-1 receptor antagonist (IL-1ra) is a natural inhibitor of IL-1, and the balance between IL-1ra and IL-1β is one of the main factors affecting chronic periodontitis (CP) and diabetes. The purpose of this study is to develop a drug carrier that is safe and nontoxic and can effectively release IL-1ra, which can effectively slow down the inflammation of periodontal tissues with diabetes, and explore the possibility of lowering the blood sugar of this drug carrier. Therefore, in this experiment, a temperature-sensitive hydrogel loaded with IL-1ra was prepared and characterized, and its anti-inflammatory effect in high-sugar environments in vivo and in vitro was evaluated. The results showed that the hydrogel could gel after 5 min at 37 °C, the pore size was 5-70 μm, and the cumulative release of IL-1ra reached 83.23% on the 21st day. Real-time polymerase chain reaction (qRT-PCR) showed that the expression of IL-1β, Interleukin 6 (IL-6), and tumor necrosis factor α (TNF-α) inflammatory factors decreased after the treatment with IL-1ra-loaded thermosensitive hydrogel. Histological evaluation and micro-computed tomography (Micro-CT) showed that IL-1ra-loaded thermosensitive hydrogel could effectively inhibit periodontal inflammation and reduce alveolar bone absorption in rats with diabetic periodontitis. It is worth mentioning that this hydrogel also plays a role in relieving hyperglycemia. Therefore, the temperature-sensitive hydrogel loaded with IL-1ra may be an effective method to treat periodontitis with diabetes.
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Fernandes GL, Vieira APM, Danelon M, Emerenciano NG, Berretta AA, Buszinski AFM, Hori JI, de Lima MHF, dos Reis TF, de Lima JA, Delbem ACB, da Silva SCM, Barbosa DB. Pomegranate Extract Potentiates the Anti-Demineralizing, Anti-Biofilm, and Anti-Inflammatory Actions of Non-Alcoholic Mouthwash When Associated with Sodium-Fluoride Trimetaphosphate. Antibiotics (Basel) 2022; 11:1477. [PMID: 36358132 PMCID: PMC9686636 DOI: 10.3390/antibiotics11111477] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/27/2022] [Accepted: 10/19/2022] [Indexed: 12/01/2023] Open
Abstract
This study investigated the anti-caries and anti-inflammatory effects of mouthwash formulations containing Punica granatum (pomegranate) peel extract (PPE), sodium-trimetaphosphate, and low concentrations of fluoride. PPE was characterized using high-performance liquid chromatography (ellagic acid and punicalagin). Total phenolics were quantified among formulations, and their stability was analyzed for 28 days. The formulation effects were evaluated as follows: (1) inorganic component concentration and reduced demineralization on bovine enamel blocks subjected to pH cycling; (2) anti-biofilm effect on dual-biofilms of Streptococcus mutans ATCC 25175 and Candida albicans ATCC 10231 treated for 1 and 10 min, respectively; and (3) cytotoxicity and production of inflammatory mediators (interleukin-6 and tumor necrosis factor-alpha). The formulation containing 3% PPE, 0.3% sodium-trimetaphosphate, and 225 ppm of fluoride resulted in a 34.5% surface hardness loss; a 13% (treated for 1 min) and 36% (treated for 10 min) biofilm reduction in S. mutans; a 26% (1 min) and 36% (10 min) biofilm reduction in C. albicans; absence of cytotoxicity; and anti-inflammatory activity confirmed by decreased interleukin-6 production in mouse macrophages. Thus, our results provide a promising prospect for the development of an alcohol-free commercial dental product with the health benefits of P. granatum that have been recognized for a millennium.
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Affiliation(s)
- Gabriela Lopes Fernandes
- Graduate Program of Dental Science, School of Dentistry, Araçatuba, São Paulo State University (UNESP), Araçatuba 16015-050, São Paulo, Brazil
| | - Ana Paula Miranda Vieira
- Graduate Program of Dental Science, School of Dentistry, Araçatuba, São Paulo State University (UNESP), Araçatuba 16015-050, São Paulo, Brazil
| | - Marcelle Danelon
- School of Dentistry, University of Ribeirão Preto—UNAERP, Ribeirão Preto 14096-039, São Paulo, Brazil
- Department of Restorative Dentistry, School of Dentistry, Araçatuba, São Paulo State University (UNESP), Araçatuba 16015-050, São Paulo, Brazil
| | - Nayara Gonçalves Emerenciano
- Graduate Program of Dental Science, School of Dentistry, Araçatuba, São Paulo State University (UNESP), Araçatuba 16015-050, São Paulo, Brazil
| | | | | | - Juliana Issa Hori
- Apis Flora Industrial and Comercial Ltd. Ribeirão Preto 14020-670, São Paulo, Brazil
| | - Mikhael Haruo Fernandes de Lima
- Department of Biochemistry and Immunology, University of São Paulo Ribeirão Preto, Ribeirão Preto 14049-900, São Paulo, Brazil
| | - Thaila Fernanda dos Reis
- Department of Dental Materials and Prosthodontics, School of Dentistry, Araçatuba, São Paulo State University (UNESP), Araçatuba 16015-050, São Paulo, Brazil
| | | | - Alberto Carlos Botazzo Delbem
- Department of Restorative Dentistry, School of Dentistry, Araçatuba, São Paulo State University (UNESP), Araçatuba 16015-050, São Paulo, Brazil
| | | | - Debora Barros Barbosa
- Department of Dental Materials and Prosthodontics, School of Dentistry, Araçatuba, São Paulo State University (UNESP), Araçatuba 16015-050, São Paulo, Brazil
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48
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de Mello-Neto JM, Elangovan G, Ervolino E, Johnson NW, Gustafsson A, da Figueredo CM. Colitis induced by dextran sulphate sodium causes histopathological and immunological changes in the periodontal tissues of Wistar rats. J Periodontal Res 2022; 57:1267-1276. [PMID: 36253900 DOI: 10.1111/jre.13063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 08/29/2022] [Accepted: 09/27/2022] [Indexed: 12/01/2022]
Abstract
OBJECTIVE This study investigated the impact of colitis induced by dextran sulphate sodium (DSS)-induced colitis (DIC) on histopathological and immunological outcomes in the periodontal tissues of Wistar rats. BACKGROUND Inflammatory bowel diseases (IBD) and periodontitis have been reported to present a bidirectional relationship. However, the inflammatory pathway that connects both diseases needs further investigation. MATERIAL AND METHODS Twenty-five male Wistar rats were allocated in four groups: unilateral ligature-induced periodontitis for 14 days: LIP (n = 7); dextran sulphate sodium-induced colitis only: DIC (n = 6); DIC + LIP (n = 6) and controls (n = 6). Digital images were obtained from the histological sections. In order to assess the attachment loss (AL), the linear distance between the cementoenamel junction (CEJ) and the alveolar bone crest was measured on the mesial root using histological photomicrography's ImageJ software. Immunological analyses of gingival tissues and plasma were performed by Bio-Plex Th1/Th2 Assay. RESULTS The DIC group showed inflammatory cells extending to the periodontal connective tissues, which contained significantly elevated expressions of IL-1α, IL-1β, IL-2, IL-6, IL-12, IL-13, GM-CSF, IFN-γ and TNF-α compared to controls. There was no significant difference in bone loss between controls and DIC. There were no significant histopathological differences between DIC + LIP and LIP. However, DIC + LIP presented a significantly lower IL-2 and IL-5 than the LIP group. There was no bone loss difference between LIP+DIC and LIP groups. DIC + LIP group presented significantly higher levels of GM-CSF in plasma. CONCLUSION DSS-induced colitis was associated with an overexpression of Th1/Th2- related cytokines in the gingival tissue.
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Affiliation(s)
| | - Gayathiri Elangovan
- School of Medicine and Dentistry, Griffith University, Southport, Queensland, Australia
| | - Edilson Ervolino
- Department of Basic Sciences, School of Dentistry, São Paulo State University-UNESP, Araçatuba, Brazil
| | - Newell Walter Johnson
- School of Medicine and Dentistry, Griffith University, Southport, Queensland, Australia
| | - Anders Gustafsson
- Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Carlos Marcelo da Figueredo
- School of Medicine and Dentistry, Griffith University, Southport, Queensland, Australia.,Division of Oral Diseases, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden
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Lin SK, Wu YF, Chang WJ, Feng SW, Huang HM. The Treatment Efficiency and Microbiota Analysis of Sapindus mukorossi Seed Oil on the Ligature-Induced Periodontitis Rat Model. Int J Mol Sci 2022; 23:8560. [PMID: 35955695 PMCID: PMC9369273 DOI: 10.3390/ijms23158560] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 07/28/2022] [Accepted: 07/30/2022] [Indexed: 02/05/2023] Open
Abstract
Periodontitis is a common oral disease mainly caused by bacterial infection and inflammation of the gingiva. In the prevention or treatment of periodontitis, anti-bacterial agents are used to inhibit pathogen growth, despite increasing levels of bacterial resistance. Sapindus mukorossi Gaertn (SM) seed oil has proven anti-bacterial and anti-inflammation properties. However, the possibility of using this plant to prevent or treat periodontitis has not been reported previously. The aim of this study was to evaluate the effects of SM oil on experimental periodontitis in rats by using micro-CT and microbiota analysis. The distance between cementoenamel junction (CEJ) and alveolar bone crest (ABC) on the sagittal micro-CT slide showed that total bone loss (TBL) was significantly lower in CEJ-ABC distances between SM oil and SM oil-free groups on Day 14. Histology data also showed less alveolar bone resorption, a result consistent result with micro-CT imaging. The microbiota analyzed at phylum and class levels were compared between the SM oil and SM oil-free groups on Day 7 and Day 14. At the phylum level, Proteobacteria, Firmicutes, Bacteroidetes, and Actinobacteria were the dominant bacterium. Firmicutes in box plot analysis was significantly less in the SM oil group than in the SM oil-free group on Day 7. At the class level, Bacteroidia, Gammaproteobacteria, Bacilli, Clostridia, and Erysipelotrichia were the dominant bacteria. The bacteria composition proportion of Bacilli, Clostridiay, and Erysipelotrichia could be seen in the SM oil group significantly less than in t SM oil-free group on Day 7. Overall, the present results show that topical application of SM oil can reduce bone resorption and change bacteria composition in the ligature-induced periodontitis model. According to these results, it is reasonable to suggest SM oil as a potential material for preventing oral disease.
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Affiliation(s)
- Shih-Kai Lin
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Yi-Fan Wu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Wei-Jen Chang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Department of Dentistry, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235041, Taiwan
| | - Sheng-Wei Feng
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Haw-Ming Huang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
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50
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Caspase-11/4 is involved in bacteria-mediated periodontitis by promoting the release of interleukin-1 β and tumor necrosis factor-α. Arch Oral Biol 2022; 142:105517. [DOI: 10.1016/j.archoralbio.2022.105517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 08/04/2022] [Accepted: 08/04/2022] [Indexed: 11/22/2022]
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